222100021120020 has 96 divisors (see below), whose sum is σ = 634573793521920. Its totient is φ = 58028491238400.

The previous prime is 222100021119997. The next prime is 222100021120073. The reversal of 222100021120020 is 20021120001222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

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, 167245135 + ... + 168567894.

It is an arithmetic number, because the mean of its divisors is an integer number (6610143682520).

Almost surely, 2^{222100021120020} is an apocalyptic number.

222100021120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222100021120020 is an abundant number, since it is smaller than the sum of its proper divisors (412473772401900).

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

222100021120020 is a wasteful number, since it uses less digits than its factorization.

222100021120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335813265 (or 335813263 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 222100021120020 its reverse (20021120001222), we get a palindrome (242121141121242).

The spelling of 222100021120020 in words is "two hundred twenty-two trillion, one hundred billion, twenty-one million, one hundred twenty thousand, twenty".