22022120020021 has 12 divisors (see below), whose sum is σ = 24769065229216. Its totient is φ = 19554525171720.

The previous prime is 22022120019973. The next prime is 22022120020027. The reversal of 22022120020021 is 12002002122022.

It is a de Polignac number, because none of the positive numbers 2^k-22022120020021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22022120019977 and 22022120020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22022120020027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2116285401 + ... + 2116295806.

Almost surely, 2^{22022120020021} is an apocalyptic number.

It is an amenable number.

22022120020021 is a deficient number, since it is larger than the sum of its proper divisors (2746945209195).

22022120020021 is a wasteful number, since it uses less digits than its factorization.

22022120020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4232581272 (or 4232581261 counting only the distinct ones).

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

Adding to 22022120020021 its reverse (12002002122022), we get a palindrome (34024122142043).

The spelling of 22022120020021 in words is "twenty-two trillion, twenty-two billion, one hundred twenty million, twenty thousand, twenty-one".