2021211212 has 12 divisors (see below), whose sum is σ = 3537478560. Its totient is φ = 1010503056.

The previous prime is 2021211211. The next prime is 2021211217. The reversal of 2021211212 is 2121121202.

It is not an unprimeable number, because it can be changed into a prime (2021211211) 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, 34253 + ... + 72219.

It is an arithmetic number, because the mean of its divisors is an integer number (294789880).

Almost surely, 2^2021211212 is an apocalyptic number.

It is an amenable number.

2021211212 is a deficient number, since it is larger than the sum of its proper divisors (1516267348).

2021211212 is a wasteful number, since it uses less digits than its factorization.

2021211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51280 (or 51278 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2021211212 is about 44957.8826458720. The cubic root of 2021211212 is about 1264.3594713789.

Adding to 2021211212 its reverse (2121121202), we get a palindrome (4142332414).

The spelling of 2021211212 in words is "two billion, twenty-one million, two hundred eleven thousand, two hundred twelve".