22951634821 has 2 divisors, whose sum is σ = 22951634822. Its totient is φ = 22951634820.

The previous prime is 22951634819. The next prime is 22951634831. The reversal of 22951634821 is 12843615922.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22943160900 + 8473921 = 151470^2 + 2911^2 .

It is a cyclic number.

It is not a de Polignac number, because 22951634821 - 2¹ = 22951634819 is a prime.

Together with 22951634819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22951634831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11475817410 + 11475817411.

It is an arithmetic number, because the mean of its divisors is an integer number (11475817411).

Almost surely, 2^22951634821 is an apocalyptic number.

It is an amenable number.

22951634821 is a deficient number, since it is larger than the sum of its proper divisors (1).

22951634821 is an equidigital number, since it uses as much as digits as its factorization.

22951634821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 43.

The spelling of 22951634821 in words is "twenty-two billion, nine hundred fifty-one million, six hundred thirty-four thousand, eight hundred twenty-one".