2121002022212 has 12 divisors (see below), whose sum is σ = 3930091982460. Its totient is φ = 998118598656.

The previous prime is 2121002022179. The next prime is 2121002022257. The reversal of 2121002022212 is 2122202001212.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 576211555396 + 1544790466816 = 759086^2 + 1242896^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

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, 15595603037 + ... + 15595603172.

It is an arithmetic number, because the mean of its divisors is an integer number (327507665205).

Almost surely, 2^{2121002022212} is an apocalyptic number.

It is an amenable number.

2121002022212 is a deficient number, since it is larger than the sum of its proper divisors (1809089960248).

2121002022212 is a wasteful number, since it uses less digits than its factorization.

2121002022212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31191206230 (or 31191206228 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2121002022212 its reverse (2122202001212), we get a palindrome (4243204023424).

The spelling of 2121002022212 in words is "two trillion, one hundred twenty-one billion, two million, twenty-two thousand, two hundred twelve".