21121131333000 has 128 divisors (see below), whose sum is σ = 66826070288640. Its totient is φ = 5552973440000.

The previous prime is 21121131332999. The next prime is 21121131333013. The reversal of 21121131333000 is 33313112112.

It is a happy number.

It is a super-2 number, since 2×21121131333000² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49367121 + ... + 49793120.

It is an arithmetic number, because the mean of its divisors is an integer number (522078674130).

Almost surely, 2^{21121131333000} is an apocalyptic number.

21121131333000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21121131333000 is an abundant number, since it is smaller than the sum of its proper divisors (45704938955640).

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

21121131333000 is a wasteful number, since it uses less digits than its factorization.

21121131333000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99160336 (or 99160322 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21121131333000 its reverse (33313112112), we get a palindrome (21154444445112).

The spelling of 21121131333000 in words is "twenty-one trillion, one hundred twenty-one billion, one hundred thirty-one million, three hundred thirty-three thousand".