100100021221122 has 64 divisors (see below), whose sum is σ = 217734799586304. Its totient is φ = 30496370529600.

The previous prime is 100100021221111. The next prime is 100100021221141. The reversal of 100100021221122 is 221122120001001.

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, 10226008 + ... + 17457699.

It is an arithmetic number, because the mean of its divisors is an integer number (3402106243536).

Almost surely, 2^{100100021221122} is an apocalyptic number.

100100021221122 is an abundant number, since it is smaller than the sum of its proper divisors (117634778365182).

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

100100021221122 is a wasteful number, since it uses less digits than its factorization.

100100021221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27684183.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 100100021221122 its reverse (221122120001001), we get a palindrome (321222141222123).

The spelling of 100100021221122 in words is "one hundred trillion, one hundred billion, twenty-one million, two hundred twenty-one thousand, one hundred twenty-two".