22061631354021 has 48 divisors (see below), whose sum is σ = 36503092454400. Its totient is φ = 12577618497024.

The previous prime is 22061631353869. The next prime is 22061631354029. The reversal of 22061631354021 is 12045313616022.

22061631354021 is a `hidden beast` number, since 2 + 2 + 0 + 61 + 6 + 31 + 3 + 540 + 21 = 666.

It is not a de Polignac number, because 22061631354021 - 2¹³ = 22061631345829 is a prime.

It is a super-3 number, since 3×22061631354021³ (a number of 41 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22061631354029) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 144441325 + ... + 144593981.

It is an arithmetic number, because the mean of its divisors is an integer number (760481092800).

Almost surely, 2^{22061631354021} is an apocalyptic number.

22061631354021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22061631354021 is a deficient number, since it is larger than the sum of its proper divisors (14441461100379).

22061631354021 is a wasteful number, since it uses less digits than its factorization.

22061631354021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157938 (or 157935 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 22061631354021 in words is "twenty-two trillion, sixty-one billion, six hundred thirty-one million, three hundred fifty-four thousand, twenty-one".