2321717511021 has 8 divisors (see below), whose sum is σ = 3108909286080. Its totient is φ = 1541168704992.

The previous prime is 2321717511011. The next prime is 2321717511041. The reversal of 2321717511021 is 1201157171232.

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

It is not a de Polignac number, because 2321717511021 - 2¹³ = 2321717502829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2321717511011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660741441 + ... + 1660742838.

It is an arithmetic number, because the mean of its divisors is an integer number (388613660760).

Almost surely, 2^{2321717511021} is an apocalyptic number.

It is an amenable number.

2321717511021 is a deficient number, since it is larger than the sum of its proper divisors (787191775059).

2321717511021 is a wasteful number, since it uses less digits than its factorization.

2321717511021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321484515.

The product of its (nonzero) digits is 5880, while the sum is 33.

The spelling of 2321717511021 in words is "two trillion, three hundred twenty-one billion, seven hundred seventeen million, five hundred eleven thousand, twenty-one".