211222221201212 has 12 divisors (see below), whose sum is σ = 398072647648536. Its totient is φ = 97487179015920.

The previous prime is 211222221201179. The next prime is 211222221201221. The reversal of 211222221201212 is 212102122222112.

It is a super-2 number, since 2×211222221201212² (a number of 29 digits) contains 22 as substring.

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, 2030982896114 + ... + 2030982896217.

It is an arithmetic number, because the mean of its divisors is an integer number (33172720637378).

Almost surely, 2^{211222221201212} is an apocalyptic number.

It is an amenable number.

211222221201212 is a deficient number, since it is larger than the sum of its proper divisors (186850426447324).

211222221201212 is a wasteful number, since it uses less digits than its factorization.

211222221201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4061965792348 (or 4061965792346 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 211222221201212 its reverse (212102122222112), we get a palindrome (423324343423324).

The spelling of 211222221201212 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred twenty-one million, two hundred one thousand, two hundred twelve".