201121112002122 has 48 divisors (see below), whose sum is σ = 469470084091008. Its totient is φ = 61858695198240.

The previous prime is 201121112002051. The next prime is 201121112002133. The reversal of 201121112002122 is 221200211121102.

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 = 201121112002095 and 201121112002104.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 171106654 + ... + 172278057.

It is an arithmetic number, because the mean of its divisors is an integer number (9780626751896).

Almost surely, 2^{201121112002122} is an apocalyptic number.

201121112002122 is an abundant number, since it is smaller than the sum of its proper divisors (268348972088886).

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

201121112002122 is a wasteful number, since it uses less digits than its factorization.

201121112002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343387235 (or 343387232 counting only the distinct ones).

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

Adding to 201121112002122 its reverse (221200211121102), we get a palindrome (422321323123224).

The spelling of 201121112002122 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twelve million, two thousand, one hundred twenty-two".