201111221020122 has 64 divisors (see below), whose sum is σ = 510772549789440. Its totient is φ = 57458785874688.

The previous prime is 201111221020103. The next prime is 201111221020181. The reversal of 201111221020122 is 221020122111102.

201111221020122 is a `hidden beast` number, since 201 + 1 + 112 + 210 + 20 + 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 = 201111221020095 and 201111221020104.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6714318 + ... + 21149574.

It is an arithmetic number, because the mean of its divisors is an integer number (7980821090460).

Almost surely, 2^{201111221020122} is an apocalyptic number.

201111221020122 is an abundant number, since it is smaller than the sum of its proper divisors (309661328769318).

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

201111221020122 is a wasteful number, since it uses less digits than its factorization.

201111221020122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14472132 (or 14472126 counting only the distinct ones).

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

Adding to 201111221020122 its reverse (221020122111102), we get a palindrome (422131343131224).

The spelling of 201111221020122 in words is "two hundred one trillion, one hundred eleven billion, two hundred twenty-one million, twenty thousand, one hundred twenty-two".