2021213311 has 8 divisors (see below), whose sum is σ = 2186199680. Its totient is φ = 1857585312.

The previous prime is 2021213309. The next prime is 2021213339. The reversal of 2021213311 is 1133121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2021213311 - 2¹ = 2021213309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021213371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336495 + ... + 342448.

It is an arithmetic number, because the mean of its divisors is an integer number (273274960).

Almost surely, 2^2021213311 is an apocalyptic number.

2021213311 is a deficient number, since it is larger than the sum of its proper divisors (164986369).

2021213311 is a wasteful number, since it uses less digits than its factorization.

2021213311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679185.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2021213311 is about 44957.9059899369. The cubic root of 2021213311 is about 1264.3599090520.

Adding to 2021213311 its reverse (1133121202), we get a palindrome (3154334513).

The spelling of 2021213311 in words is "two billion, twenty-one million, two hundred thirteen thousand, three hundred eleven".