2121113320000 has 70 divisors (see below), whose sum is σ = 5259671770958. Its totient is φ = 848445312000.

The previous prime is 2121113319989. The next prime is 2121113320019. The reversal of 2121113320000 is 233111212.

It can be written as a sum of positive squares in 5 ways, for example, as 1137874490944 + 983238829056 = 1066712^2 + 991584^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 26473917 + ... + 26553916.

Almost surely, 2^{2121113320000} is an apocalyptic number.

2121113320000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2121113320000 is an abundant number, since it is smaller than the sum of its proper divisors (3138558450958).

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

2121113320000 is an frugal number, since it uses more digits than its factorization.

2121113320000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53027865 (or 53027840 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121113320000 its reverse (233111212), we get a palindrome (2121346431212).

The spelling of 2121113320000 in words is "two trillion, one hundred twenty-one billion, one hundred thirteen million, three hundred twenty thousand".