2100221212 has 6 divisors (see below), whose sum is σ = 3675387128. Its totient is φ = 1050110604.

The previous prime is 2100221153. The next prime is 2100221231. The reversal of 2100221212 is 2121220012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2100221192 and 2100221201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262527648 + ... + 262527655.

Almost surely, 2^2100221212 is an apocalyptic number.

It is an amenable number.

2100221212 is a deficient number, since it is larger than the sum of its proper divisors (1575165916).

2100221212 is a wasteful number, since it uses less digits than its factorization.

2100221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525055307 (or 525055305 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2100221212 is about 45828.1705067964. The cubic root of 2100221212 is about 1280.6241284053.

Adding to 2100221212 its reverse (2121220012), we get a palindrome (4221441224).

The spelling of 2100221212 in words is "two billion, one hundred million, two hundred twenty-one thousand, two hundred twelve".