222010000020 has 72 divisors (see below), whose sum is σ = 677561897376. Its totient is φ = 58839452352.

The previous prime is 222009999997. The next prime is 222010000049. The reversal of 222010000020 is 20000010222.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 222009999957 and 222010000011.

It is a congruent 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, 3754062 + ... + 3812741.

It is an arithmetic number, because the mean of its divisors is an integer number (9410581908).

Almost surely, 2^222010000020 is an apocalyptic number.

222010000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222010000020 is an abundant number, since it is smaller than the sum of its proper divisors (455551897356).

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

222010000020 is a wasteful number, since it uses less digits than its factorization.

222010000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7566981 (or 7566976 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 222010000020 its reverse (20000010222), we get a palindrome (242010010242).

The spelling of 222010000020 in words is "two hundred twenty-two billion, ten million, twenty", and thus it is an aban number.