20221315215 has 8 divisors (see below), whose sum is σ = 32354104368. Its totient is φ = 10784701440.

The previous prime is 20221315157. The next prime is 20221315223. The reversal of 20221315215 is 51251312202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20221315215 - 2²⁰ = 20220266639 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 674043826 + ... + 674043855.

It is an arithmetic number, because the mean of its divisors is an integer number (4044263046).

Almost surely, 2^20221315215 is an apocalyptic number.

20221315215 is a deficient number, since it is larger than the sum of its proper divisors (12132789153).

20221315215 is a wasteful number, since it uses less digits than its factorization.

20221315215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1348087689.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 20221315215 its reverse (51251312202), we get a palindrome (71472627417).

The spelling of 20221315215 in words is "twenty billion, two hundred twenty-one million, three hundred fifteen thousand, two hundred fifteen".