20000021111320 has 64 divisors (see below), whose sum is σ = 45053942472000. Its totient is φ = 7990432485888.

The previous prime is 20000021111293. The next prime is 20000021111321. The reversal of 20000021111320 is 2311112000002.

It is a super-3 number, since 3×20000021111320³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20000021111320.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000021111321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121740754 + ... + 121904926.

It is an arithmetic number, because the mean of its divisors is an integer number (703967851125).

Almost surely, 2^{20000021111320} is an apocalyptic number.

20000021111320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000021111320 is an abundant number, since it is smaller than the sum of its proper divisors (25053921360680).

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

20000021111320 is a wasteful number, since it uses less digits than its factorization.

20000021111320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167812 (or 167808 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20000021111320 its reverse (2311112000002), we get a palindrome (22311133111322).

The spelling of 20000021111320 in words is "twenty trillion, twenty-one million, one hundred eleven thousand, three hundred twenty".