20320321122 has 20 divisors (see below), whose sum is σ = 45532571766. Its totient is φ = 6773440320.

The previous prime is 20320321121. The next prime is 20320321123. The reversal of 20320321122 is 22112302302.

20320321122 is a `hidden beast` number, since 2 + 0 + 320 + 321 + 1 + 22 = 666.

It is an interprime number because it is at equal distance from previous prime (20320321121) and next prime (20320321123).

It can be written as a sum of positive squares in only one way, i.e., 14589982521 + 5730338601 = 120789^2 + 75699^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20320321095 and 20320321104.

It is not an unprimeable number, because it can be changed into a prime (20320321121) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 62716879 + ... + 62717202.

Almost surely, 2^20320321122 is an apocalyptic number.

20320321122 is an abundant number, since it is smaller than the sum of its proper divisors (25212250644).

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

20320321122 is a wasteful number, since it uses less digits than its factorization.

20320321122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125434095 (or 125434086 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20320321122 its reverse (22112302302), we get a palindrome (42432623424).

The spelling of 20320321122 in words is "twenty billion, three hundred twenty million, three hundred twenty-one thousand, one hundred twenty-two".