2031332202121 has 4 divisors (see below), whose sum is σ = 2051444402244. Its totient is φ = 2011220002000.

The previous prime is 2031332202077. The next prime is 2031332202139. The reversal of 2031332202121 is 1212022331302.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 835644626496 + 1195687575625 = 914136^2 + 1093475^2 .

It is a cyclic number.

It is not a de Polignac number, because 2031332202121 - 2³⁵ = 1996972463753 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2031332202092 and 2031332202101.

It is not an unprimeable number, because it can be changed into a prime (2031332202191) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10056099910 + ... + 10056100111.

It is an arithmetic number, because the mean of its divisors is an integer number (512861100561).

Almost surely, 2^{2031332202121} is an apocalyptic number.

It is an amenable number.

2031332202121 is a deficient number, since it is larger than the sum of its proper divisors (20112200123).

2031332202121 is a wasteful number, since it uses less digits than its factorization.

2031332202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20112200122.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 2031332202121 its reverse (1212022331302), we get a palindrome (3243354533423).

The spelling of 2031332202121 in words is "two trillion, thirty-one billion, three hundred thirty-two million, two hundred two thousand, one hundred twenty-one".