15147220106 has 4 divisors (see below), whose sum is σ = 22720830162. Its totient is φ = 7573610052.

The previous prime is 15147220097. The next prime is 15147220129. The reversal of 15147220106 is 60102274151.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 11234092081 + 3913128025 = 105991^2 + 62555^2 .

It is a super-2 number, since 2×15147220106² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3786805025 + ... + 3786805028.

Almost surely, 2^15147220106 is an apocalyptic number.

15147220106 is a deficient number, since it is larger than the sum of its proper divisors (7573610056).

15147220106 is an equidigital number, since it uses as much as digits as its factorization.

15147220106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7573610055.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 15147220106 its reverse (60102274151), we get a palindrome (75249494257).

The spelling of 15147220106 in words is "fifteen billion, one hundred forty-seven million, two hundred twenty thousand, one hundred six".