22021630424261 has 12 divisors (see below), whose sum is σ = 23846804528580. Its totient is φ = 20326894174080.

The previous prime is 22021630424249. The next prime is 22021630424273. The reversal of 22021630424261 is 16242403612022.

It is an interprime number because it is at equal distance from previous prime (22021630424249) and next prime (22021630424273).

It can be written as a sum of positive squares in 6 ways, for example, as 70240900900 + 21951389523361 = 265030^2 + 4685231^2 .

It is not a de Polignac number, because 22021630424261 - 2¹⁰ = 22021630423237 is a prime.

It is a super-2 number, since 2×22021630424261² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021630424221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2079671 + ... + 6954731.

It is an arithmetic number, because the mean of its divisors is an integer number (1987233710715).

Almost surely, 2^{22021630424261} is an apocalyptic number.

It is an amenable number.

22021630424261 is a deficient number, since it is larger than the sum of its proper divisors (1825174104319).

22021630424261 is a wasteful number, since it uses less digits than its factorization.

22021630424261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4901816 (or 4901803 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 22021630424261 in words is "twenty-two trillion, twenty-one billion, six hundred thirty million, four hundred twenty-four thousand, two hundred sixty-one".