222120012100220 has 72 divisors (see below), whose sum is σ = 513248289759744. Its totient is φ = 80268573723264.

The previous prime is 222120012100177. The next prime is 222120012100229. The reversal of 222120012100220 is 22001210021222.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222120012100229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192795452 + ... + 193944131.

Almost surely, 2^{222120012100220} is an apocalyptic number.

222120012100220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222120012100220 is an abundant number, since it is smaller than the sum of its proper divisors (291128277659524).

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

222120012100220 is a wasteful number, since it uses less digits than its factorization.

222120012100220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386739699 (or 386739650 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 222120012100220 its reverse (22001210021222), we get a palindrome (244121222121442).

The spelling of 222120012100220 in words is "two hundred twenty-two trillion, one hundred twenty billion, twelve million, one hundred thousand, two hundred twenty".