2221231120212 has 48 divisors (see below), whose sum is σ = 5613818515200. Its totient is φ = 679505109888.

The previous prime is 2221231120201. The next prime is 2221231120237. The reversal of 2221231120212 is 2120211321222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41125212 + ... + 41179187.

It is an arithmetic number, because the mean of its divisors is an integer number (116954552400).

Almost surely, 2^{2221231120212} is an apocalyptic number.

It is an amenable number.

2221231120212 is an abundant number, since it is smaller than the sum of its proper divisors (3392587394988).

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

2221231120212 is a wasteful number, since it uses less digits than its factorization.

2221231120212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82304592 (or 82304590 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 2221231120212 its reverse (2120211321222), we get a palindrome (4341442441434).

The spelling of 2221231120212 in words is "two trillion, two hundred twenty-one billion, two hundred thirty-one million, one hundred twenty thousand, two hundred twelve".