15220722209 has 16 divisors (see below), whose sum is σ = 19588632576. Its totient is φ = 11477710800.

The previous prime is 15220722157. The next prime is 15220722313. The reversal of 15220722209 is 90222702251.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 15220722209 - 2²⁰ = 15219673633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15220722109) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3185867 + ... + 3190640.

It is an arithmetic number, because the mean of its divisors is an integer number (1224289536).

Almost surely, 2^15220722209 is an apocalyptic number.

It is an amenable number.

15220722209 is a deficient number, since it is larger than the sum of its proper divisors (4367910367).

15220722209 is a wasteful number, since it uses less digits than its factorization.

15220722209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6376556.

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 15220722209 in words is "fifteen billion, two hundred twenty million, seven hundred twenty-two thousand, two hundred nine".