15220742227 has 2 divisors, whose sum is σ = 15220742228. Its totient is φ = 15220742226.

The previous prime is 15220742183. The next prime is 15220742231. The reversal of 15220742227 is 72224702251.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15220742227 - 2¹⁹ = 15220217939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 15220742192 and 15220742201.

It is not a weakly prime, because it can be changed into another prime (15220742267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7610371113 + 7610371114.

It is an arithmetic number, because the mean of its divisors is an integer number (7610371114).

Almost surely, 2^15220742227 is an apocalyptic number.

15220742227 is a deficient number, since it is larger than the sum of its proper divisors (1).

15220742227 is an equidigital number, since it uses as much as digits as its factorization.

15220742227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31360, while the sum is 34.

The spelling of 15220742227 in words is "fifteen billion, two hundred twenty million, seven hundred forty-two thousand, two hundred twenty-seven".