21122463052 has 12 divisors (see below), whose sum is σ = 36970187800. Its totient is φ = 10559552256.

The previous prime is 21122463049. The next prime is 21122463083. The reversal of 21122463052 is 25036422112.

It is a self number, because there is not a number n which added to its sum of digits gives 21122463052.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 391302 + ... + 441997.

Almost surely, 2^21122463052 is an apocalyptic number.

It is an amenable number.

21122463052 is a deficient number, since it is larger than the sum of its proper divisors (15847724748).

21122463052 is a wasteful number, since it uses less digits than its factorization.

21122463052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839640 (or 839638 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 21122463052 its reverse (25036422112), we get a palindrome (46158885164).

The spelling of 21122463052 in words is "twenty-one billion, one hundred twenty-two million, four hundred sixty-three thousand, fifty-two".