2021000003331 has 16 divisors (see below), whose sum is σ = 2716620238848. Its totient is φ = 1336362300000.

The previous prime is 2021000003327. The next prime is 2021000003339. The reversal of 2021000003331 is 1333000001202.

It is not a de Polignac number, because 2021000003331 - 2² = 2021000003327 is a prime.

It is a super-2 number, since 2×2021000003331² (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 2021000003331.

It is not an unprimeable number, because it can be changed into a prime (2021000003339) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 693456 + ... + 2126706.

It is an arithmetic number, because the mean of its divisors is an integer number (169788764928).

Almost surely, 2^{2021000003331} is an apocalyptic number.

2021000003331 is a deficient number, since it is larger than the sum of its proper divisors (695620235517).

2021000003331 is a wasteful number, since it uses less digits than its factorization.

2021000003331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437082.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 2021000003331 its reverse (1333000001202), we get a palindrome (3354000004533).

The spelling of 2021000003331 in words is "two trillion, twenty-one billion, three thousand, three hundred thirty-one".