201220122212 has 48 divisors (see below), whose sum is σ = 378687805440. Its totient is φ = 93254149152.

The previous prime is 201220122211. The next prime is 201220122227. The reversal of 201220122212 is 212221022102.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (201220122211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12361703 + ... + 12377969.

It is an arithmetic number, because the mean of its divisors is an integer number (7889329280).

Almost surely, 2^201220122212 is an apocalyptic number.

It is an amenable number.

201220122212 is a deficient number, since it is larger than the sum of its proper divisors (177467683228).

201220122212 is a wasteful number, since it uses less digits than its factorization.

201220122212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19800 (or 19798 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201220122212 its reverse (212221022102), we get a palindrome (413441144314).

It can be divided in two parts, 20122012 and 2212, that multiplied together give a palindrome (44509890544).

The spelling of 201220122212 in words is "two hundred one billion, two hundred twenty million, one hundred twenty-two thousand, two hundred twelve".