102001111112091 has 16 divisors (see below), whose sum is σ = 143170470706176. Its totient is φ = 64468574518656.

The previous prime is 102001111112041. The next prime is 102001111112107. The reversal of 102001111112091 is 190211111100201.

It is a happy number.

It is not a de Polignac number, because 102001111112091 - 2¹⁸ = 102001110849947 is a prime.

It is a super-2 number, since 2×102001111112091² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102001111112041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6541040755 + ... + 6541056348.

It is an arithmetic number, because the mean of its divisors is an integer number (8948154419136).

Almost surely, 2^{102001111112091} is an apocalyptic number.

102001111112091 is a deficient number, since it is larger than the sum of its proper divisors (41169359594085).

102001111112091 is a wasteful number, since it uses less digits than its factorization.

102001111112091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13082097242.

The product of its (nonzero) digits is 36, while the sum is 21.

Adding to 102001111112091 its reverse (190211111100201), we get a palindrome (292212222212292).

The spelling of 102001111112091 in words is "one hundred two trillion, one billion, one hundred eleven million, one hundred twelve thousand, ninety-one".