102111001220111 has 16 divisors (see below), whose sum is σ = 110239057434240. Its totient is φ = 94022046397440.

The previous prime is 102111001220087. The next prime is 102111001220117. The reversal of 102111001220111 is 111022100111201.

It is a cyclic number.

It is not a de Polignac number, because 102111001220111 - 2²⁶ = 102110934111247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111001220117) 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, 48795935 + ... + 50845503.

It is an arithmetic number, because the mean of its divisors is an integer number (6889941089640).

Almost surely, 2^{102111001220111} is an apocalyptic number.

102111001220111 is a deficient number, since it is larger than the sum of its proper divisors (8128056214129).

102111001220111 is a wasteful number, since it uses less digits than its factorization.

102111001220111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059106.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 102111001220111 its reverse (111022100111201), we get a palindrome (213133101331312).

The spelling of 102111001220111 in words is "one hundred two trillion, one hundred eleven billion, one million, two hundred twenty thousand, one hundred eleven".