101022121100 has 72 divisors (see below), whose sum is σ = 226368844800. Its totient is φ = 39091636800.

The previous prime is 101022121091. The next prime is 101022121147. The reversal of 101022121100 is 1121220101.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17478011 + ... + 17483789.

Almost surely, 2^101022121100 is an apocalyptic number.

101022121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 101022121100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113184422400).

101022121100 is an abundant number, since it is smaller than the sum of its proper divisors (125346723700).

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

101022121100 is a wasteful number, since it uses less digits than its factorization.

101022121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11463 (or 11456 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 101022121100 its reverse (1121220101), we get a palindrome (102143341201).

Subtracting from 101022121100 its reverse (1121220101), we obtain a palindrome (99900900999).

The spelling of 101022121100 in words is "one hundred one billion, twenty-two million, one hundred twenty-one thousand, one hundred".