2102210021212 has 24 divisors (see below), whose sum is σ = 4214406812000. Its totient is φ = 898807129920.

The previous prime is 2102210021203. The next prime is 2102210021237. The reversal of 2102210021212 is 2121200122012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89155587 + ... + 89179162.

Almost surely, 2^{2102210021212} is an apocalyptic number.

It is an amenable number.

2102210021212 is an abundant number, since it is smaller than the sum of its proper divisors (2112196790788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102210021212 is a wasteful number, since it uses less digits than its factorization.

2102210021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178335181 (or 178335179 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2102210021212 its reverse (2121200122012), we get a palindrome (4223410143224).

The spelling of 2102210021212 in words is "two trillion, one hundred two billion, two hundred ten million, twenty-one thousand, two hundred twelve".