102021220110 has 32 divisors (see below), whose sum is σ = 244965981312. Its totient is φ = 27192875040.

The previous prime is 102021220109. The next prime is 102021220117. The reversal of 102021220110 is 11022120201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021220117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 733984 + ... + 861843.

It is an arithmetic number, because the mean of its divisors is an integer number (7655186916).

Almost surely, 2^102021220110 is an apocalyptic number.

102021220110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102021220110 is an abundant number, since it is smaller than the sum of its proper divisors (142944761202).

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

102021220110 is a wasteful number, since it uses less digits than its factorization.

102021220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597968.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 102021220110 its reverse (11022120201), we get a palindrome (113043340311).

Subtracting from 102021220110 its reverse (11022120201), we obtain a palindrome (90999099909).

The spelling of 102021220110 in words is "one hundred two billion, twenty-one million, two hundred twenty thousand, one hundred ten".