2021001212 has 12 divisors (see below), whose sum is σ = 3541582296. Its totient is φ = 1009120560.

The previous prime is 2021001193. The next prime is 2021001221. The reversal of 2021001212 is 2121001202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2021001193 and 2021001202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341714 + ... + 347577.

It is an arithmetic number, because the mean of its divisors is an integer number (295131858).

Almost surely, 2^2021001212 is an apocalyptic number.

It is an amenable number.

2021001212 is a deficient number, since it is larger than the sum of its proper divisors (1520581084).

2021001212 is a wasteful number, since it uses less digits than its factorization.

2021001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690028 (or 690026 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 2021001212 is about 44955.5470659628. The cubic root of 2021001212 is about 1264.3156816810.

Adding to 2021001212 its reverse (2121001202), we get a palindrome (4142002414).

The spelling of 2021001212 in words is "two billion, twenty-one million, one thousand, two hundred twelve".