21965125022 has 16 divisors (see below), whose sum is σ = 33033614400. Its totient is φ = 10953959040.

The previous prime is 21965125001. The next prime is 21965125027. The reversal of 21965125022 is 22052156912.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21965125027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1222379 + ... + 1240217.

It is an arithmetic number, because the mean of its divisors is an integer number (2064600900).

Almost surely, 2^21965125022 is an apocalyptic number.

21965125022 is a deficient number, since it is larger than the sum of its proper divisors (11068489378).

21965125022 is a wasteful number, since it uses less digits than its factorization.

21965125022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19411.

The product of its (nonzero) digits is 21600, while the sum is 35.

The spelling of 21965125022 in words is "twenty-one billion, nine hundred sixty-five million, one hundred twenty-five thousand, twenty-two".