102001231121111 has 32 divisors (see below), whose sum is σ = 118848017525760. Its totient is φ = 85725358228224.

The previous prime is 102001231121071. The next prime is 102001231121129. The reversal of 102001231121111 is 111121132100201.

It is a cyclic number.

It is not a de Polignac number, because 102001231121111 - 2²⁶ = 102001164012247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102001231121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001231121171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8620059251 + ... + 8620071083.

It is an arithmetic number, because the mean of its divisors is an integer number (3714000547680).

Almost surely, 2^{102001231121111} is an apocalyptic number.

102001231121111 is a deficient number, since it is larger than the sum of its proper divisors (16846786404649).

102001231121111 is a wasteful number, since it uses less digits than its factorization.

102001231121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24735.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 102001231121111 its reverse (111121132100201), we get a palindrome (213122363221312).

The spelling of 102001231121111 in words is "one hundred two trillion, one billion, two hundred thirty-one million, one hundred twenty-one thousand, one hundred eleven".