222100012020 has 48 divisors (see below), whose sum is σ = 628037278848. Its totient is φ = 58640265600.

The previous prime is 222100011989. The next prime is 222100012031. The reversal of 222100012020 is 20210001222.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 222100011987 and 222100012005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18319024 + ... + 18331143.

It is an arithmetic number, because the mean of its divisors is an integer number (13084109976).

Almost surely, 2^222100012020 is an apocalyptic number.

222100012020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222100012020 is an abundant number, since it is smaller than the sum of its proper divisors (405937266828).

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

222100012020 is a wasteful number, since it uses less digits than its factorization.

222100012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36650280 (or 36650278 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 222100012020 its reverse (20210001222), we get a palindrome (242310013242).

The spelling of 222100012020 in words is "two hundred twenty-two billion, one hundred million, twelve thousand, twenty".