21264035256122 has 8 divisors (see below), whose sum is σ = 32188677222900. Its totient is φ = 10534476181824.

The previous prime is 21264035256119. The next prime is 21264035256133. The reversal of 21264035256122 is 22165253046212.

It can be written as a sum of positive squares in 2 ways, for example, as 16634398803841 + 4629636452281 = 4078529^2 + 2151659^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 21264035256122.

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, 48770722847 + ... + 48770723282.

Almost surely, 2^{21264035256122} is an apocalyptic number.

21264035256122 is a deficient number, since it is larger than the sum of its proper divisors (10924641966778).

21264035256122 is a wasteful number, since it uses less digits than its factorization.

21264035256122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97541446240.

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 21264035256122 in words is "twenty-one trillion, two hundred sixty-four billion, thirty-five million, two hundred fifty-six thousand, one hundred twenty-two".