201121211121122 has 32 divisors (see below), whose sum is σ = 313335092496384. Its totient is φ = 96764325985600.

The previous prime is 201121211121079. The next prime is 201121211121133. The reversal of 201121211121122 is 221121112121102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201121211121094 and 201121211121103.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68519393 + ... + 71394324.

It is an arithmetic number, because the mean of its divisors is an integer number (9791721640512).

Almost surely, 2^{201121211121122} is an apocalyptic number.

201121211121122 is a deficient number, since it is larger than the sum of its proper divisors (112213881375262).

201121211121122 is a wasteful number, since it uses less digits than its factorization.

201121211121122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139914034.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 201121211121122 its reverse (221121112121102), we get a palindrome (422242323242224).

The spelling of 201121211121122 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twenty-two".