21142311135124 has 12 divisors (see below), whose sum is σ = 38274873606900. Its totient is φ = 10206632961728.

The previous prime is 21142311135061. The next prime is 21142311135139. The reversal of 21142311135124 is 42153111324112.

It can be written as a sum of positive squares in 2 ways, for example, as 17562117355524 + 3580193779600 = 4190718^2 + 1892140^2 .

It is a congruent number.

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, 91130651329 + ... + 91130651560.

It is an arithmetic number, because the mean of its divisors is an integer number (3189572800575).

Almost surely, 2^{21142311135124} is an apocalyptic number.

It is an amenable number.

21142311135124 is a deficient number, since it is larger than the sum of its proper divisors (17132562471776).

21142311135124 is a wasteful number, since it uses less digits than its factorization.

21142311135124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182261302922 (or 182261302920 counting only the distinct ones).

The product of its digits is 5760, while the sum is 31.

Adding to 21142311135124 its reverse (42153111324112), we get a palindrome (63295422459236).

The spelling of 21142311135124 in words is "twenty-one trillion, one hundred forty-two billion, three hundred eleven million, one hundred thirty-five thousand, one hundred twenty-four".