21112020001180 has 24 divisors (see below), whose sum is σ = 44335500456240. Its totient is φ = 8444758771200.

The previous prime is 21112020001159. The next prime is 21112020001181. The reversal of 21112020001180 is 8110002021112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112020001181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 543655 + ... + 6520705.

It is an arithmetic number, because the mean of its divisors is an integer number (1847312519010).

Almost surely, 2^{21112020001180} is an apocalyptic number.

21112020001180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21112020001180 is an abundant number, since it is smaller than the sum of its proper divisors (23223480455060).

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

21112020001180 is a wasteful number, since it uses less digits than its factorization.

21112020001180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6153669 (or 6153667 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 21112020001180 its reverse (8110002021112), we get a palindrome (29222022022292).

The spelling of 21112020001180 in words is "twenty-one trillion, one hundred twelve billion, twenty million, one thousand, one hundred eighty".