2101211212 has 6 divisors (see below), whose sum is σ = 3677119628. Its totient is φ = 1050605604.

The previous prime is 2101211179. The next prime is 2101211239. The reversal of 2101211212 is 2121121012.

It is a junction number, because it is equal to n+sod(n) for n = 2101211192 and 2101211201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262651398 + ... + 262651405.

Almost surely, 2^2101211212 is an apocalyptic number.

It is an amenable number.

2101211212 is a deficient number, since it is larger than the sum of its proper divisors (1575908416).

2101211212 is a wasteful number, since it uses less digits than its factorization.

2101211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525302807 (or 525302805 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 2101211212 is about 45838.9704509165. The cubic root of 2101211212 is about 1280.8253165348.

Adding to 2101211212 its reverse (2121121012), we get a palindrome (4222332224).

The spelling of 2101211212 in words is "two billion, one hundred one million, two hundred eleven thousand, two hundred twelve".