22021122001021 has 8 divisors (see below), whose sum is σ = 25870968504864. Its totient is φ = 18479263217520.

The previous prime is 22021122001007. The next prime is 22021122001027. The reversal of 22021122001021 is 12010022112022.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22021122001021 - 2¹⁵ = 22021121968253 is a prime.

It is a super-2 number, since 2×22021122001021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22021122000986 and 22021122001004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021122001027) 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, 76996929931 + ... + 76996930216.

It is an arithmetic number, because the mean of its divisors is an integer number (3233871063108).

Almost surely, 2^{22021122001021} is an apocalyptic number.

It is an amenable number.

22021122001021 is a deficient number, since it is larger than the sum of its proper divisors (3849846503843).

22021122001021 is a wasteful number, since it uses less digits than its factorization.

22021122001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153993860171.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22021122001021 its reverse (12010022112022), we get a palindrome (34031144113043).

The spelling of 22021122001021 in words is "twenty-two trillion, twenty-one billion, one hundred twenty-two million, one thousand, twenty-one".