22020012020021 has 16 divisors (see below), whose sum is σ = 22559715648000. Its totient is φ = 21483364697088.

The previous prime is 22020012020009. The next prime is 22020012020029. The reversal of 22020012020021 is 12002021002022.

It is a cyclic number.

It is not a de Polignac number, because 22020012020021 - 2¹⁰ = 22020012018997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22020012019978 and 22020012020005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22020012020029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22071056 + ... + 23047158.

It is an arithmetic number, because the mean of its divisors is an integer number (1409982228000).

Almost surely, 2^{22020012020021} is an apocalyptic number.

It is an amenable number.

22020012020021 is a deficient number, since it is larger than the sum of its proper divisors (539703627979).

22020012020021 is a wasteful number, since it uses less digits than its factorization.

22020012020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977668.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 22020012020021 its reverse (12002021002022), we get a palindrome (34022033022043).

The spelling of 22020012020021 in words is "twenty-two trillion, twenty billion, twelve million, twenty thousand, twenty-one".