22021120101021 has 4 divisors (see below), whose sum is σ = 29361493468032. Its totient is φ = 14680746734012.

The previous prime is 22021120100983. The next prime is 22021120101059. The reversal of 22021120101021 is 12010102112022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (22021120100983) and next prime (22021120101059).

It is a cyclic number.

It is not a de Polignac number, because 22021120101021 - 2¹¹ = 22021120098973 is a prime.

It is a super-2 number, since 2×22021120101021² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021120151021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3670186683501 + ... + 3670186683506.

It is an arithmetic number, because the mean of its divisors is an integer number (7340373367008).

Almost surely, 2^{22021120101021} is an apocalyptic number.

It is an amenable number.

22021120101021 is a deficient number, since it is larger than the sum of its proper divisors (7340373367011).

22021120101021 is an equidigital number, since it uses as much as digits as its factorization.

22021120101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7340373367010.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22021120101021 its reverse (12010102112022), we get a palindrome (34031222213043).

The spelling of 22021120101021 in words is "twenty-two trillion, twenty-one billion, one hundred twenty million, one hundred one thousand, twenty-one".