20155224522 has 32 divisors (see below), whose sum is σ = 41389657344. Its totient is φ = 6539302400.

The previous prime is 20155224511. The next prime is 20155224539. The reversal of 20155224522 is 22542255102.

It is a self number, because there is not a number n which added to its sum of digits gives 20155224522.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10978 + ... + 201074.

It is an arithmetic number, because the mean of its divisors is an integer number (1293426792).

Almost surely, 2^20155224522 is an apocalyptic number.

20155224522 is an abundant number, since it is smaller than the sum of its proper divisors (21234432822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20155224522 is a wasteful number, since it uses less digits than its factorization.

20155224522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190574.

The product of its (nonzero) digits is 16000, while the sum is 30.

Adding to 20155224522 its reverse (22542255102), we get a palindrome (42697479624).

The spelling of 20155224522 in words is "twenty billion, one hundred fifty-five million, two hundred twenty-four thousand, five hundred twenty-two".