21134120352 has 48 divisors (see below), whose sum is σ = 55489940352. Its totient is φ = 7043072000.

The previous prime is 21134120351. The next prime is 21134120383. The reversal of 21134120352 is 25302143112.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (21134120351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 432928 + ... + 479264.

It is an arithmetic number, because the mean of its divisors is an integer number (1156040424).

Almost surely, 2^21134120352 is an apocalyptic number.

It is an amenable number.

21134120352 is an abundant number, since it is smaller than the sum of its proper divisors (34355820000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21134120352 is a wasteful number, since it uses less digits than its factorization.

21134120352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51101 (or 51093 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 21134120352 its reverse (25302143112), we get a palindrome (46436263464).

The spelling of 21134120352 in words is "twenty-one billion, one hundred thirty-four million, one hundred twenty thousand, three hundred fifty-two".