222120012120100 has 72 divisors (see below), whose sum is σ = 490095057603200. Its totient is φ = 87357054441600.

The previous prime is 222120012120067. The next prime is 222120012120119. The reversal of 222120012120100 is 1021210021222.

It is a happy number.

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, 8317141 + ... + 22658659.

Almost surely, 2^{222120012120100} is an apocalyptic number.

222120012120100 is a gapful number since it is divisible by the number (20) 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 222120012120100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245047528801600).

222120012120100 is an abundant number, since it is smaller than the sum of its proper divisors (267975045483100).

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

222120012120100 is a wasteful number, since it uses less digits than its factorization.

222120012120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14344133 (or 14344126 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 222120012120100 its reverse (1021210021222), we get a palindrome (223141222141322).

The spelling of 222120012120100 in words is "two hundred twenty-two trillion, one hundred twenty billion, twelve million, one hundred twenty thousand, one hundred".