20022311320 has 64 divisors (see below), whose sum is σ = 49163293440. Its totient is φ = 7278230400.

The previous prime is 20022311303. The next prime is 20022311333. The reversal of 20022311320 is 2311322002.

It is a junction number, because it is equal to n+sod(n) for n = 20022311294 and 20022311303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564869 + ... + 1577611.

It is an arithmetic number, because the mean of its divisors is an integer number (768176460).

Almost surely, 2^20022311320 is an apocalyptic number.

20022311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20022311320 is an abundant number, since it is smaller than the sum of its proper divisors (29140982120).

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

20022311320 is a wasteful number, since it uses less digits than its factorization.

20022311320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16336 (or 16332 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20022311320 its reverse (2311322002), we get a palindrome (22333633322).

The spelling of 20022311320 in words is "twenty billion, twenty-two million, three hundred eleven thousand, three hundred twenty".