2120211221212 has 48 divisors (see below), whose sum is σ = 4249971855360. Its totient is φ = 906616282752.

The previous prime is 2120211221173. The next prime is 2120211221231. The reversal of 2120211221212 is 2121221120212.

It is a self number, because there is not a number n which added to its sum of digits gives 2120211221212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131657553 + ... + 131673655.

It is an arithmetic number, because the mean of its divisors is an integer number (88541080320).

Almost surely, 2^{2120211221212} is an apocalyptic number.

It is an amenable number.

2120211221212 is an abundant number, since it is smaller than the sum of its proper divisors (2129760634148).

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

2120211221212 is a wasteful number, since it uses less digits than its factorization.

2120211221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26410 (or 26408 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 2120211221212 its reverse (2121221120212), we get a palindrome (4241432341424).

The spelling of 2120211221212 in words is "two trillion, one hundred twenty billion, two hundred eleven million, two hundred twenty-one thousand, two hundred twelve".