2151121023824 has 10 divisors (see below), whose sum is σ = 4167796983690. Its totient is φ = 1075560511904.

The previous prime is 2151121023817. The next prime is 2151121023907. The reversal of 2151121023824 is 4283201211512.

It can be written as a sum of positive squares in only one way, i.e., 1623126960400 + 527994063424 = 1274020^2 + 726632^2 .

It is a super-2 number, since 2×2151121023824² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67222531979 + ... + 67222532010.

It is an arithmetic number, because the mean of its divisors is an integer number (416779698369).

Almost surely, 2^{2151121023824} is an apocalyptic number.

It is an amenable number.

2151121023824 is a deficient number, since it is larger than the sum of its proper divisors (2016675959866).

2151121023824 is a wasteful number, since it uses less digits than its factorization.

2151121023824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134445063997 (or 134445063991 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 32.

The spelling of 2151121023824 in words is "two trillion, one hundred fifty-one billion, one hundred twenty-one million, twenty-three thousand, eight hundred twenty-four".