2722107616621 has 4 divisors (see below), whose sum is σ = 2722197216544. Its totient is φ = 2722018016700.

The previous prime is 2722107616517. The next prime is 2722107616637. The reversal of 2722107616621 is 1266167012272.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2722107616621 - 2²⁵ = 2722074062189 is a prime.

It is a super-2 number, since 2×2722107616621² (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 (2722107616691) 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 3 ways as a sum of consecutive naturals, for example, 44754375 + ... + 44815156.

It is an arithmetic number, because the mean of its divisors is an integer number (680549304136).

Almost surely, 2^{2722107616621} is an apocalyptic number.

It is an amenable number.

2722107616621 is a deficient number, since it is larger than the sum of its proper divisors (89599923).

2722107616621 is an equidigital number, since it uses as much as digits as its factorization.

2722107616621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89599922.

The product of its (nonzero) digits is 169344, while the sum is 43.

The spelling of 2722107616621 in words is "two trillion, seven hundred twenty-two billion, one hundred seven million, six hundred sixteen thousand, six hundred twenty-one".