21000121120132 has 48 divisors (see below), whose sum is σ = 45818865348480. Its totient is φ = 8181790502400.

The previous prime is 21000121120127. The next prime is 21000121120151. The reversal of 21000121120132 is 23102112100012.

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, 43269532 + ... + 43752172.

It is an arithmetic number, because the mean of its divisors is an integer number (954559694760).

Almost surely, 2^{21000121120132} is an apocalyptic number.

21000121120132 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21000121120132 is an abundant number, since it is smaller than the sum of its proper divisors (24818744228348).

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

21000121120132 is a wasteful number, since it uses less digits than its factorization.

21000121120132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623932 (or 623930 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21000121120132 its reverse (23102112100012), we get a palindrome (44102233220144).

The spelling of 21000121120132 in words is "twenty-one trillion, one hundred twenty-one million, one hundred twenty thousand, one hundred thirty-two".