2021331212 has 12 divisors (see below), whose sum is σ = 3745407960. Its totient is φ = 951214656.

The previous prime is 2021331211. The next prime is 2021331217. The reversal of 2021331212 is 2121331202.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is not an unprimeable number, because it can be changed into a prime (2021331211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14862662 + ... + 14862797.

It is an arithmetic number, because the mean of its divisors is an integer number (312117330).

Almost surely, 2^2021331212 is an apocalyptic number.

It is an amenable number.

2021331212 is a deficient number, since it is larger than the sum of its proper divisors (1724076748).

2021331212 is a wasteful number, since it uses less digits than its factorization.

2021331212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29725480 (or 29725478 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2021331212 is about 44959.2172084880. The cubic root of 2021331212 is about 1264.3844927016.

Adding to 2021331212 its reverse (2121331202), we get a palindrome (4142662414).

The spelling of 2021331212 in words is "two billion, twenty-one million, three hundred thirty-one thousand, two hundred twelve".