201121211021122 has 16 divisors (see below), whose sum is σ = 345227566400640. Its totient is φ = 86082717846528.

The previous prime is 201121211021041. The next prime is 201121211021189. The reversal of 201121211021122 is 221120112121102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 201121211021122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9340561918 + ... + 9340583449.

It is an arithmetic number, because the mean of its divisors is an integer number (21576722900040).

Almost surely, 2^{201121211021122} is an apocalyptic number.

201121211021122 is a deficient number, since it is larger than the sum of its proper divisors (144106355379518).

201121211021122 is a wasteful number, since it uses less digits than its factorization.

201121211021122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18681146145.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121211021122 its reverse (221120112121102), we get a palindrome (422241323142224).

The spelling of 201121211021122 in words is "two hundred one trillion, one hundred twenty-one billion, two hundred eleven million, twenty-one thousand, one hundred twenty-two".