2021311111330 has 128 divisors (see below), whose sum is σ = 4342118400000. Its totient is φ = 676889615808.

The previous prime is 2021311111297. The next prime is 2021311111343. The reversal of 2021311111330 is 331111131202.

It is a super-2 number, since 2×2021311111330² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2021311111298 and 2021311111307.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 80431227 + ... + 80456353.

It is an arithmetic number, because the mean of its divisors is an integer number (33922800000).

Almost surely, 2^{2021311111330} is an apocalyptic number.

2021311111330 is an abundant number, since it is smaller than the sum of its proper divisors (2320807288670).

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

2021311111330 is a wasteful number, since it uses less digits than its factorization.

2021311111330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25701 (or 25687 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 2021311111330 its reverse (331111131202), we get a palindrome (2352422242532).

The spelling of 2021311111330 in words is "two trillion, twenty-one billion, three hundred eleven million, one hundred eleven thousand, three hundred thirty".