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102011000021 = 7349148728081
BaseRepresentation
bin101111100000001010…
…1000101010011010101
3100202022022200201122222
41133000111011103111
53132404304000041
6114510241432125
710240633123220
oct1370025052325
9322268621588
10102011000021
113a298606197
121792b33b645
139809338898
144d1a1805b7
1529c0a7174b
hex17c05454d5

102011000021 has 16 divisors (see below), whose sum is σ = 117000844800. Its totient is φ = 87125725440.

The previous prime is 102010999973. The next prime is 102011000027. The reversal of 102011000021 is 120000110201.

It is a cyclic number.

It is not a de Polignac number, because 102011000021 - 234 = 84831130837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102010999972 and 102011000008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011000027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3618701 + ... + 3646781.

It is an arithmetic number, because the mean of its divisors is an integer number (7312552800).

Almost surely, 2102011000021 is an apocalyptic number.

It is an amenable number.

102011000021 is a deficient number, since it is larger than the sum of its proper divisors (14989844779).

102011000021 is a wasteful number, since it uses less digits than its factorization.

102011000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29924.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 102011000021 its reverse (120000110201), we get a palindrome (222011110222).

The spelling of 102011000021 in words is "one hundred two billion, eleven million, twenty-one", and thus it is an aban number.

Divisors: 1 7 349 1487 2443 10409 28081 196567 518963 3632741 9800269 41756447 68601883 292295129 14573000003 102011000021