20021122110252 has 24 divisors (see below), whose sum is σ = 46718204302336. Its totient is φ = 6673385554128.

The previous prime is 20021122110251. The next prime is 20021122110307. The reversal of 20021122110252 is 25201122112002.

It is not an unprimeable number, because it can be changed into a prime (20021122110251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39967708 + ... + 40465539.

Almost surely, 2^{20021122110252} is an apocalyptic number.

It is an amenable number.

20021122110252 is an abundant number, since it is smaller than the sum of its proper divisors (26697082192084).

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

20021122110252 is a wasteful number, since it uses less digits than its factorization.

20021122110252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80453997 (or 80453995 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 21.

Adding to 20021122110252 its reverse (25201122112002), we get a palindrome (45222244222254).

The spelling of 20021122110252 in words is "twenty trillion, twenty-one billion, one hundred twenty-two million, one hundred ten thousand, two hundred fifty-two".