21133134102144 has 64 divisors (see below), whose sum is σ = 56135378479680. Its totient is φ = 7044316416000.

The previous prime is 21133134102139. The next prime is 21133134102163. The reversal of 21133134102144 is 44120143133112.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71599669 + ... + 71894219.

It is an arithmetic number, because the mean of its divisors is an integer number (877115288745).

Almost surely, 2^{21133134102144} is an apocalyptic number.

21133134102144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21133134102144 is an abundant number, since it is smaller than the sum of its proper divisors (35002244377536).

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

21133134102144 is a wasteful number, since it uses less digits than its factorization.

21133134102144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481409 (or 481397 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

Adding to 21133134102144 its reverse (44120143133112), we get a palindrome (65253277235256).

The spelling of 21133134102144 in words is "twenty-one trillion, one hundred thirty-three billion, one hundred thirty-four million, one hundred two thousand, one hundred forty-four".