2113200121312 has 144 divisors (see below), whose sum is σ = 5072095596960. Its totient is φ = 862494538752.

The previous prime is 2113200121303. The next prime is 2113200121327. The reversal of 2113200121312 is 2131210023112.

It is a super-2 number, since 2×2113200121312² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2113200121312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8130718 + ... + 8386594.

It is an arithmetic number, because the mean of its divisors is an integer number (35222886090).

Almost surely, 2^{2113200121312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2113200121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2536047798480).

2113200121312 is an abundant number, since it is smaller than the sum of its proper divisors (2958895475648).

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

2113200121312 is a wasteful number, since it uses less digits than its factorization.

2113200121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256153 (or 256138 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 2113200121312 its reverse (2131210023112), we get a palindrome (4244410144424).

The spelling of 2113200121312 in words is "two trillion, one hundred thirteen billion, two hundred million, one hundred twenty-one thousand, three hundred twelve".