201211212122 has 24 divisors (see below), whose sum is σ = 312900954240. Its totient is φ = 96940787040.

The previous prime is 201211212077. The next prime is 201211212157. The reversal of 201211212122 is 221212112102.

201211212122 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 201211212122.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3336029 + ... + 3395807.

It is an arithmetic number, because the mean of its divisors is an integer number (13037539760).

Almost surely, 2^201211212122 is an apocalyptic number.

201211212122 is a deficient number, since it is larger than the sum of its proper divisors (111689742118).

201211212122 is an equidigital number, since it uses as much as digits as its factorization.

201211212122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60278 (or 60045 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201211212122 its reverse (221212112102), we get a palindrome (422423324224).

The spelling of 201211212122 in words is "two hundred one billion, two hundred eleven million, two hundred twelve thousand, one hundred twenty-two".