102021112111011 has 32 divisors (see below), whose sum is σ = 151612512307200. Its totient is φ = 60643252200960.

The previous prime is 102021112110989. The next prime is 102021112111033. The reversal of 102021112111011 is 110111211120201.

It is an interprime number because it is at equal distance from previous prime (102021112110989) and next prime (102021112111033).

It is not a de Polignac number, because 102021112111011 - 2¹⁸ = 102021111848867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102021112111091) 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, 69693805 + ... + 71142593.

It is an arithmetic number, because the mean of its divisors is an integer number (4737891009600).

Almost surely, 2^{102021112111011} is an apocalyptic number.

102021112111011 is a deficient number, since it is larger than the sum of its proper divisors (49591400196189).

102021112111011 is a wasteful number, since it uses less digits than its factorization.

102021112111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1521499.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102021112111011 its reverse (110111211120201), we get a palindrome (212132323231212).

The spelling of 102021112111011 in words is "one hundred two trillion, twenty-one billion, one hundred twelve million, one hundred eleven thousand, eleven".