2021513211 has 12 divisors (see below), whose sum is σ = 2930821920. Its totient is φ = 1342663920.

The previous prime is 2021513203. The next prime is 2021513261. The reversal of 2021513211 is 1123151202.

It is not a de Polignac number, because 2021513211 - 2³ = 2021513203 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2021513201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415075 + ... + 419916.

It is an arithmetic number, because the mean of its divisors is an integer number (244235160).

Almost surely, 2^2021513211 is an apocalyptic number.

2021513211 is a deficient number, since it is larger than the sum of its proper divisors (909308709).

2021513211 is a wasteful number, since it uses less digits than its factorization.

2021513211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835266 (or 835263 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2021513211 is about 44961.2412084008. The cubic root of 2021513211 is about 1264.4224396094.

Adding to 2021513211 its reverse (1123151202), we get a palindrome (3144664413).

The spelling of 2021513211 in words is "two billion, twenty-one million, five hundred thirteen thousand, two hundred eleven".