22012002000020 has 96 divisors (see below), whose sum is σ = 49487423029632. Its totient is φ = 8195188359168.

The previous prime is 22012002000017. The next prime is 22012002000067. The reversal of 22012002000020 is 2000020021022.

It is a junction number, because it is equal to n+sod(n) for n = 22012001999965 and 22012002000010.

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, 20466947 + ... + 21515573.

It is an arithmetic number, because the mean of its divisors is an integer number (515493989892).

Almost surely, 2^{22012002000020} is an apocalyptic number.

22012002000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22012002000020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24743711514816).

22012002000020 is an abundant number, since it is smaller than the sum of its proper divisors (27475421029612).

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

22012002000020 is a wasteful number, since it uses less digits than its factorization.

22012002000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1049337 (or 1049335 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

Adding to 22012002000020 its reverse (2000020021022), we get a palindrome (24012022021042).

The spelling of 22012002000020 in words is "twenty-two trillion, twelve billion, two million, twenty", and thus it is an aban number and an uban number.