201001212211122 has 24 divisors (see below), whose sum is σ = 454437523260864. Its totient is φ = 64087343023704.

The previous prime is 201001212211087. The next prime is 201001212211123. The reversal of 201001212211122 is 221112212100102.

201001212211122 is a `hidden beast` number, since 20 + 100 + 1 + 212 + 211 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201001212211095 and 201001212211104.

It is not an unprimeable number, because it can be changed into a prime (201001212211123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 242755086798 + ... + 242755087625.

It is an arithmetic number, because the mean of its divisors is an integer number (18934896802536).

Almost surely, 2^{201001212211122} is an apocalyptic number.

201001212211122 is an abundant number, since it is smaller than the sum of its proper divisors (253436311049742).

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

201001212211122 is a wasteful number, since it uses less digits than its factorization.

201001212211122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485510174454 (or 485510174451 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 201001212211122 its reverse (221112212100102), we get a palindrome (422113424311224).

The spelling of 201001212211122 in words is "two hundred one trillion, one billion, two hundred twelve million, two hundred eleven thousand, one hundred twenty-two".