20122213221320 has 96 divisors (see below), whose sum is σ = 52854241004280. Its totient is φ = 6874492584960.

The previous prime is 20122213221317. The next prime is 20122213221343. The reversal of 20122213221320 is 2312231222102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 13164023907076 + 6958189314244 = 3628226^2 + 2637838^2 .

It is a super-2 number, since 2×20122213221320² (a number of 27 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 17716919 + ... + 18818438.

Almost surely, 2^{20122213221320} is an apocalyptic number.

20122213221320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20122213221320 is an abundant number, since it is smaller than the sum of its proper divisors (32732027782960).

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

20122213221320 is a wasteful number, since it uses less digits than its factorization.

20122213221320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36535663 (or 36535652 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 20122213221320 its reverse (2312231222102), we get a palindrome (22434444443422).

The spelling of 20122213221320 in words is "twenty trillion, one hundred twenty-two billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred twenty".