102021220111110 has 64 divisors (see below), whose sum is σ = 259452283756032. Its totient is φ = 25585734749696.

The previous prime is 102021220111061. The next prime is 102021220111241. The reversal of 102021220111110 is 11111022120201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102021220111110.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75860442 + ... + 77193581.

It is an arithmetic number, because the mean of its divisors is an integer number (4053941933688).

Almost surely, 2^{102021220111110} is an apocalyptic number.

102021220111110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021220111110 is an abundant number, since it is smaller than the sum of its proper divisors (157431063644922).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102021220111110 is a wasteful number, since it uses less digits than its factorization.

102021220111110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153055357.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 102021220111110 its reverse (11111022120201), we get a palindrome (113132242231311).

The spelling of 102021220111110 in words is "one hundred two trillion, twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred ten".