201122211220212 has 12 divisors (see below), whose sum is σ = 469285159513856. Its totient is φ = 67040737073400.

The previous prime is 201122211220201. The next prime is 201122211220213. The reversal of 201122211220212 is 212022112221102.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×201122211220212² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201122211220213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8380092134164 + ... + 8380092134187.

Almost surely, 2^{201122211220212} is an apocalyptic number.

It is an amenable number.

201122211220212 is an abundant number, since it is smaller than the sum of its proper divisors (268162948293644).

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

201122211220212 is a wasteful number, since it uses less digits than its factorization.

201122211220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16760184268358 (or 16760184268356 counting only the distinct ones).

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

Adding to 201122211220212 its reverse (212022112221102), we get a palindrome (413144323441314).

The spelling of 201122211220212 in words is "two hundred one trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty thousand, two hundred twelve".