2131202121120 has 144 divisors (see below), whose sum is σ = 7507331500032. Its totient is φ = 549987632640.

The previous prime is 2131202121073. The next prime is 2131202121121. The reversal of 2131202121120 is 211212021312.

2131202121120 is a `hidden beast` number, since 21 + 312 + 0 + 212 + 1 + 120 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 2131202121093 and 2131202121102.

It is not an unprimeable number, because it can be changed into a prime (2131202121121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23826352 + ... + 23915631.

It is an arithmetic number, because the mean of its divisors is an integer number (52134246528).

Almost surely, 2^{2131202121120} is an apocalyptic number.

2131202121120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131202121120 is an abundant number, since it is smaller than the sum of its proper divisors (5376129378912).

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

2131202121120 is a wasteful number, since it uses less digits than its factorization.

2131202121120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47742035 (or 47742024 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 2131202121120 its reverse (211212021312), we get a palindrome (2342414142432).

The spelling of 2131202121120 in words is "two trillion, one hundred thirty-one billion, two hundred two million, one hundred twenty-one thousand, one hundred twenty".