201011111121222 has 48 divisors (see below), whose sum is σ = 448821599531760. Its totient is φ = 64970291733696.

The previous prime is 201011111121221. The next prime is 201011111121349. The reversal of 201011111121222 is 222121111110102.

It is a happy number.

201011111121222 is a `hidden beast` number, since 201 + 0 + 11 + 111 + 121 + 222 = 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 = 201011111121195 and 201011111121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011111121221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 514853472 + ... + 515243747.

It is an arithmetic number, because the mean of its divisors is an integer number (9350449990245).

Almost surely, 2^{201011111121222} is an apocalyptic number.

201011111121222 is an abundant number, since it is smaller than the sum of its proper divisors (247810488410538).

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

201011111121222 is a wasteful number, since it uses less digits than its factorization.

201011111121222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030097557 (or 1030097554 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 201011111121222 its reverse (222121111110102), we get a palindrome (423132222231324).

The spelling of 201011111121222 in words is "two hundred one trillion, eleven billion, one hundred eleven million, one hundred twenty-one thousand, two hundred twenty-two".