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102101212212 = 22355819152429
BaseRepresentation
bin101111100010110110…
…1001101110000110100
3100202112121102222112020
41133011231031300310
53133100402242322
6114523223153140
710243106661426
oct1370555156064
9322477388466
10102101212212
113a334521a1a
12179555a57b0
139821c3328c
144d28144816
1529c894105c
hex17c5b4dc34

102101212212 has 24 divisors (see below), whose sum is σ = 238241992800. Its totient is φ = 34032904416.

The previous prime is 102101212207. The next prime is 102101212217. The reversal of 102101212212 is 212212101201.

It is an interprime number because it is at equal distance from previous prime (102101212207) and next prime (102101212217).

It is a junction number, because it is equal to n+sod(n) for n = 102101212191 and 102101212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102101212217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 593614 + ... + 746042.

It is an arithmetic number, because the mean of its divisors is an integer number (9926749700).

Almost surely, 2102101212212 is an apocalyptic number.

102101212212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

102101212212 is an abundant number, since it is smaller than the sum of its proper divisors (136140780588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102101212212 is a wasteful number, since it uses less digits than its factorization.

102101212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208255 (or 208253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102101212212 its reverse (212212101201), we get a palindrome (314313313413).

The spelling of 102101212212 in words is "one hundred two billion, one hundred one million, two hundred twelve thousand, two hundred twelve".

Divisors: 1 2 3 4 6 12 55819 111638 152429 167457 223276 304858 334914 457287 609716 669828 914574 1829148 8508434351 17016868702 25525303053 34033737404 51050606106 102101212212