20321122262120 has 16 divisors (see below), whose sum is σ = 45722525089860. Its totient is φ = 8128448904832.

The previous prime is 20321122262107. The next prime is 20321122262123. The reversal of 20321122262120 is 2126222112302.

It can be written as a sum of positive squares in 2 ways, for example, as 20152790942596 + 168331319524 = 4489186^2 + 410282^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20321122262120.

It is not an unprimeable number, because it can be changed into a prime (20321122262123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 254014028237 + ... + 254014028316.

Almost surely, 2^{20321122262120} is an apocalyptic number.

20321122262120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20321122262120 is an abundant number, since it is smaller than the sum of its proper divisors (25401402827740).

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

20321122262120 is a wasteful number, since it uses less digits than its factorization.

20321122262120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508028056564 (or 508028056560 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

Adding to 20321122262120 its reverse (2126222112302), we get a palindrome (22447344374422).

The spelling of 20321122262120 in words is "twenty trillion, three hundred twenty-one billion, one hundred twenty-two million, two hundred sixty-two thousand, one hundred twenty".