22000002020021 has 8 divisors (see below), whose sum is σ = 23207913928320. Its totient is φ = 20797091818272.

The previous prime is 22000002019997. The next prime is 22000002020033. The reversal of 22000002020021 is 12002020000022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22000002020021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000002019984 and 22000002020011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000002020041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1250417600 + ... + 1250435193.

It is an arithmetic number, because the mean of its divisors is an integer number (2900989241040).

Almost surely, 2^{22000002020021} is an apocalyptic number.

It is an amenable number.

22000002020021 is a deficient number, since it is larger than the sum of its proper divisors (1207911908299).

22000002020021 is a wasteful number, since it uses less digits than its factorization.

22000002020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2500853275.

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

Adding to 22000002020021 its reverse (12002020000022), we get a palindrome (34002022020043).

The spelling of 22000002020021 in words is "twenty-two trillion, two million, twenty thousand, twenty-one".