2180200219921 has 8 divisors (see below), whose sum is σ = 2211030259200. Its totient is φ = 2149373597280.

The previous prime is 2180200219853. The next prime is 2180200220017. The reversal of 2180200219921 is 1299120020812.

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 2180200219921 - 2²⁵ = 2180166665489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2180200219321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444960 + ... + 2135038.

It is an arithmetic number, because the mean of its divisors is an integer number (276378782400).

Almost surely, 2^{2180200219921} is an apocalyptic number.

It is an amenable number.

2180200219921 is a deficient number, since it is larger than the sum of its proper divisors (30830039279).

2180200219921 is a wasteful number, since it uses less digits than its factorization.

2180200219921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1708319.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 2180200219921 in words is "two trillion, one hundred eighty billion, two hundred million, two hundred nineteen thousand, nine hundred twenty-one".