2102121212 has 12 divisors (see below), whose sum is σ = 3683102640. Its totient is φ = 1049806176.

The previous prime is 2102121169. The next prime is 2102121223. The reversal of 2102121212 is 2121212012.

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, 309833 + ... + 316544.

It is an arithmetic number, because the mean of its divisors is an integer number (306925220).

Almost surely, 2^2102121212 is an apocalyptic number.

It is an amenable number.

2102121212 is a deficient number, since it is larger than the sum of its proper divisors (1580981428).

2102121212 is a wasteful number, since it uses less digits than its factorization.

2102121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627220 (or 627218 counting only the distinct ones).

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

The square root of 2102121212 is about 45848.8954283525. The cubic root of 2102121212 is about 1281.0101913047.

Adding to 2102121212 its reverse (2121212012), we get a palindrome (4223333224).

The spelling of 2102121212 in words is "two billion, one hundred two million, one hundred twenty-one thousand, two hundred twelve".