20315124536222 has 4 divisors (see below), whose sum is σ = 30472686804336. Its totient is φ = 10157562268110.

The previous prime is 20315124536197. The next prime is 20315124536293. The reversal of 20315124536222 is 22263542151302.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5078781134054 + ... + 5078781134057.

It is an arithmetic number, because the mean of its divisors is an integer number (7618171701084).

Almost surely, 2^{20315124536222} is an apocalyptic number.

20315124536222 is a deficient number, since it is larger than the sum of its proper divisors (10157562268114).

20315124536222 is a wasteful number, since it uses less digits than its factorization.

20315124536222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157562268113.

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 20315124536222 its reverse (22263542151302), we get a palindrome (42578666687524).

The spelling of 20315124536222 in words is "twenty trillion, three hundred fifteen billion, one hundred twenty-four million, five hundred thirty-six thousand, two hundred twenty-two".