22121352752061 has 4 divisors (see below), whose sum is σ = 29495137002752. Its totient is φ = 14747568501372.

The previous prime is 22121352751987. The next prime is 22121352752117. The reversal of 22121352752061 is 16025725312122.

It is a happy number.

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 not a de Polignac number, because 22121352752061 - 2¹⁹ = 22121352227773 is a prime.

It is a super-2 number, since 2×22121352752061² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121352750061) 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, 3686892125341 + ... + 3686892125346.

It is an arithmetic number, because the mean of its divisors is an integer number (7373784250688).

Almost surely, 2^{22121352752061} is an apocalyptic number.

It is an amenable number.

22121352752061 is a deficient number, since it is larger than the sum of its proper divisors (7373784250691).

22121352752061 is an equidigital number, since it uses as much as digits as its factorization.

22121352752061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7373784250690.

The product of its (nonzero) digits is 100800, while the sum is 39.

The spelling of 22121352752061 in words is "twenty-two trillion, one hundred twenty-one billion, three hundred fifty-two million, seven hundred fifty-two thousand, sixty-one".