221022102211212 has 48 divisors (see below), whose sum is σ = 523427997818880. Its totient is φ = 72572692285632.

The previous prime is 221022102211199. The next prime is 221022102211297. The reversal of 221022102211212 is 212112201220122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30706018 + ... + 37214294.

It is an arithmetic number, because the mean of its divisors is an integer number (10904749954560).

Almost surely, 2^{221022102211212} is an apocalyptic number.

It is an amenable number.

221022102211212 is an abundant number, since it is smaller than the sum of its proper divisors (302405895607668).

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

221022102211212 is a wasteful number, since it uses less digits than its factorization.

221022102211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6550590 (or 6550588 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 221022102211212 its reverse (212112201220122), we get a palindrome (433134303431334).

The spelling of 221022102211212 in words is "two hundred twenty-one trillion, twenty-two billion, one hundred two million, two hundred eleven thousand, two hundred twelve".