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10101102221 = 719277487563
BaseRepresentation
bin10010110100001001…
…01001011010001101
3222001222000011022002
421122010221122031
5131141340232341
64350153402045
7505212644420
oct113204513215
928058004262
1010101102221
114313899671
121b5aa09325
13c4c928882
146bb75d9b7
153e1bce29b
hex25a12968d

10101102221 has 32 divisors (see below), whose sum is σ = 12242319360. Its totient is φ = 8141518656.

The previous prime is 10101102203. The next prime is 10101102269. The reversal of 10101102221 is 12220110101.

It is a cyclic number.

It is not a de Polignac number, because 10101102221 - 214 = 10101085837 is a prime.

It is a super-2 number, since 2×101011022212 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10101102821) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17941286 + ... + 17941848.

It is an arithmetic number, because the mean of its divisors is an integer number (382572480).

Almost surely, 210101102221 is an apocalyptic number.

It is an amenable number.

10101102221 is a deficient number, since it is larger than the sum of its proper divisors (2141217139).

10101102221 is a wasteful number, since it uses less digits than its factorization.

10101102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10101102221 its reverse (12220110101), we get a palindrome (22321212322).

The spelling of 10101102221 in words is "ten billion, one hundred one million, one hundred two thousand, two hundred twenty-one".

Divisors: 1 7 19 133 277 487 563 1939 3409 3941 5263 9253 10697 36841 64771 74879 134899 155951 274181 944293 1091657 1919267 2563081 2963069 5209439 17941567 20741483 36466073 75948137 531636959 1443014603 10101102221