22211221202212 has 24 divisors (see below), whose sum is σ = 44565279857280. Its totient is φ = 9488486775360.

The previous prime is 22211221202141. The next prime is 22211221202243. The reversal of 22211221202212 is 21220212211222.

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, 1275325537 + ... + 1275342952.

It is an arithmetic number, because the mean of its divisors is an integer number (1856886660720).

Almost surely, 2^{22211221202212} is an apocalyptic number.

It is an amenable number.

22211221202212 is an abundant number, since it is smaller than the sum of its proper divisors (22354058655068).

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

22211221202212 is a wasteful number, since it uses less digits than its factorization.

22211221202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2550668811 (or 2550668809 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22211221202212 its reverse (21220212211222), we get a palindrome (43431433413434).

The spelling of 22211221202212 in words is "twenty-two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred two thousand, two hundred twelve".