100222222122120 has 384 divisors, whose sum is σ = 351367144704000. Its totient is φ = 22802526641664.

The previous prime is 100222222122109. The next prime is 100222222122133. The reversal of 100222222122120 is 21221222222001.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1575814081 + ... + 1575877679.

It is an arithmetic number, because the mean of its divisors is an integer number (915018606000).

Almost surely, 2^{100222222122120} is an apocalyptic number.

100222222122120 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 100222222122120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175683572352000).

100222222122120 is an abundant number, since it is smaller than the sum of its proper divisors (251144922581880).

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

100222222122120 is a wasteful number, since it uses less digits than its factorization.

100222222122120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64857 (or 64846 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 100222222122120 its reverse (21221222222001), we get a palindrome (121443444344121).

The spelling of 100222222122120 in words is "one hundred trillion, two hundred twenty-two billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred twenty".