2651360472221 has 16 divisors (see below), whose sum is σ = 2674577880768. Its totient is φ = 2628232790400.

The previous prime is 2651360472197. The next prime is 2651360472259. The reversal of 2651360472221 is 1222740631562.

It is a cyclic number.

It is not a de Polignac number, because 2651360472221 - 2³⁴ = 2634180603037 is a prime.

It is a super-2 number, since 2×2651360472221² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2651360472421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 224286491 + ... + 224298311.

It is an arithmetic number, because the mean of its divisors is an integer number (167161117548).

Almost surely, 2^{2651360472221} is an apocalyptic number.

It is an amenable number.

2651360472221 is a deficient number, since it is larger than the sum of its proper divisors (23217408547).

2651360472221 is a wasteful number, since it uses less digits than its factorization.

2651360472221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15452.

The product of its (nonzero) digits is 241920, while the sum is 41.

The spelling of 2651360472221 in words is "two trillion, six hundred fifty-one billion, three hundred sixty million, four hundred seventy-two thousand, two hundred twenty-one".