2021121331312 has 20 divisors (see below), whose sum is σ = 3932307200160. Its totient is φ = 1006332376448.

The previous prime is 2021121331301. The next prime is 2021121331351. The reversal of 2021121331312 is 2131331211202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 264264133 + ... + 264271780.

It is an arithmetic number, because the mean of its divisors is an integer number (196615360008).

Almost surely, 2^{2021121331312} is an apocalyptic number.

It is an amenable number.

2021121331312 is a deficient number, since it is larger than the sum of its proper divisors (1911185868848).

2021121331312 is a wasteful number, since it uses less digits than its factorization.

2021121331312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528536160 (or 528536154 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 2021121331312 its reverse (2131331211202), we get a palindrome (4152452542514).

The spelling of 2021121331312 in words is "two trillion, twenty-one billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred twelve".