2272105621 has 2 divisors, whose sum is σ = 2272105622. Its totient is φ = 2272105620.

The previous prime is 2272105609. The next prime is 2272105637. The reversal of 2272105621 is 1265012722.

2272105621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1729728100 + 542377521 = 41590^2 + 23289^2 .

It is a cyclic number.

It is not a de Polignac number, because 2272105621 - 2¹¹ = 2272103573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2272105621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2272105691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136052810 + 1136052811.

It is an arithmetic number, because the mean of its divisors is an integer number (1136052811).

Almost surely, 2^2272105621 is an apocalyptic number.

It is an amenable number.

2272105621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2272105621 is an equidigital number, since it uses as much as digits as its factorization.

2272105621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 2272105621 is about 47666.6090780538. The cubic root of 2272105621 is about 1314.6480614944.

The spelling of 2272105621 in words is "two billion, two hundred seventy-two million, one hundred five thousand, six hundred twenty-one".