22221122001212 has 12 divisors (see below), whose sum is σ = 39147949835400. Its totient is φ = 11035993476816.

The previous prime is 22221122001173. The next prime is 22221122001241. The reversal of 22221122001212 is 21210022112222.

It is a congruent number.

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, 18641880278 + ... + 18641881469.

It is an arithmetic number, because the mean of its divisors is an integer number (3262329152950).

Almost surely, 2^{22221122001212} is an apocalyptic number.

It is an amenable number.

22221122001212 is a deficient number, since it is larger than the sum of its proper divisors (16926827834188).

22221122001212 is a wasteful number, since it uses less digits than its factorization.

22221122001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37283761900 (or 37283761898 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 22221122001212 its reverse (21210022112222), we get a palindrome (43431144113434).

The spelling of 22221122001212 in words is "twenty-two trillion, two hundred twenty-one billion, one hundred twenty-two million, one thousand, two hundred twelve".