15222261061 has 6 divisors (see below), whose sum is σ = 17707528230. Its totient is φ = 13047652296.

The previous prime is 15222261031. The next prime is 15222261073. The reversal of 15222261061 is 16016222251.

It can be written as a sum of positive squares in only one way, i.e., 13098802500 + 2123458561 = 114450^2 + 46081^2 .

It is not a de Polignac number, because 15222261061 - 2¹⁹ = 15221736773 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15222261011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 155329146 + ... + 155329243.

It is an arithmetic number, because the mean of its divisors is an integer number (2951254705).

Almost surely, 2^15222261061 is an apocalyptic number.

It is an amenable number.

15222261061 is a deficient number, since it is larger than the sum of its proper divisors (2485267169).

15222261061 is an equidigital number, since it uses as much as digits as its factorization.

15222261061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310658403 (or 310658396 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The spelling of 15222261061 in words is "fifteen billion, two hundred twenty-two million, two hundred sixty-one thousand, sixty-one".