221012222000020 has 24 divisors (see below), whose sum is σ = 506318908582368. Its totient is φ = 80368080727200.

The previous prime is 221012221999991. The next prime is 221012222000033. The reversal of 221012222000020 is 20000222210122.

It is a super-2 number, since 2×221012222000020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221012221999958 and 221012222000003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 502300504326 + ... + 502300504765.

It is an arithmetic number, because the mean of its divisors is an integer number (21096621190932).

Almost surely, 2^{221012222000020} is an apocalyptic number.

221012222000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221012222000020 is an abundant number, since it is smaller than the sum of its proper divisors (285306686582348).

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

221012222000020 is a wasteful number, since it uses less digits than its factorization.

221012222000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1004601009111 (or 1004601009109 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 221012222000020 its reverse (20000222210122), we get a palindrome (241012444210142).

The spelling of 221012222000020 in words is "two hundred twenty-one trillion, twelve billion, two hundred twenty-two million, twenty", and thus it is an aban number.