20522204226 has 20 divisors (see below), whose sum is σ = 45984939462. Its totient is φ = 6840734688.

The previous prime is 20522204191. The next prime is 20522204231. The reversal of 20522204226 is 62240222502.

It can be written as a sum of positive squares in only one way, i.e., 17291987001 + 3230217225 = 131499^2 + 56835^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20522204226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 63339975 + ... + 63340298.

Almost surely, 2^20522204226 is an apocalyptic number.

20522204226 is an abundant number, since it is smaller than the sum of its proper divisors (25462735236).

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

20522204226 is a wasteful number, since it uses less digits than its factorization.

20522204226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126680287 (or 126680278 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 20522204226 its reverse (62240222502), we get a palindrome (82762426728).

The spelling of 20522204226 in words is "twenty billion, five hundred twenty-two million, two hundred four thousand, two hundred twenty-six".