102021102111 has 16 divisors (see below), whose sum is σ = 137516028416. Its totient is φ = 67271730336.

The previous prime is 102021102107. The next prime is 102021102149. The reversal of 102021102111 is 111201120201.

It is not a de Polignac number, because 102021102111 - 2² = 102021102107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021102181) 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, 53721 + ... + 454893.

It is an arithmetic number, because the mean of its divisors is an integer number (8594751776).

Almost surely, 2^102021102111 is an apocalyptic number.

102021102111 is a deficient number, since it is larger than the sum of its proper divisors (35494926305).

102021102111 is a wasteful number, since it uses less digits than its factorization.

102021102111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402102.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 102021102111 its reverse (111201120201), we get a palindrome (213222222312).

The spelling of 102021102111 in words is "one hundred two billion, twenty-one million, one hundred two thousand, one hundred eleven".