2152020401521 has 8 divisors (see below), whose sum is σ = 2265787338080. Its totient is φ = 2038303735488.

The previous prime is 2152020401491. The next prime is 2152020401539. The reversal of 2152020401521 is 1251040202512.

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

It is a cyclic number.

It is not a de Polignac number, because 2152020401521 - 2¹⁹ = 2152019877233 is a prime.

It is a super-2 number, since 2×2152020401521² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2152020401621) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 12479736 + ... + 12651001.

It is an arithmetic number, because the mean of its divisors is an integer number (283223417260).

Almost surely, 2^{2152020401521} is an apocalyptic number.

It is an amenable number.

2152020401521 is a deficient number, since it is larger than the sum of its proper divisors (113766936559).

2152020401521 is a wasteful number, since it uses less digits than its factorization.

2152020401521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25135263.

The product of its (nonzero) digits is 1600, while the sum is 25.

The spelling of 2152020401521 in words is "two trillion, one hundred fifty-two billion, twenty million, four hundred one thousand, five hundred twenty-one".