9901020102111 has 12 divisors (see below), whose sum is σ = 15142736626992. Its totient is φ = 6212404769856.

The previous prime is 9901020102089. The next prime is 9901020102121. The reversal of 9901020102111 is 1112010201099.

It is not a de Polignac number, because 9901020102111 - 2⁶ = 9901020102047 is a prime.

It is a super-2 number, since 2×9901020102111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9901020102121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32356274691 + ... + 32356274996.

It is an arithmetic number, because the mean of its divisors is an integer number (1261894718916).

Almost surely, 2^{9901020102111} is an apocalyptic number.

9901020102111 is a deficient number, since it is larger than the sum of its proper divisors (5241716524881).

9901020102111 is a wasteful number, since it uses less digits than its factorization.

9901020102111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64712549710 (or 64712549707 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 27.

The spelling of 9901020102111 in words is "nine trillion, nine hundred one billion, twenty million, one hundred two thousand, one hundred eleven".