201111121112222 has 4 divisors (see below), whose sum is σ = 301666681668336. Its totient is φ = 100555560556110.

The previous prime is 201111121112197. The next prime is 201111121112249. The reversal of 201111121112222 is 222211121111102.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 201111121112194 and 201111121112203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50277780278054 + ... + 50277780278057.

It is an arithmetic number, because the mean of its divisors is an integer number (75416670417084).

Almost surely, 2^{201111121112222} is an apocalyptic number.

201111121112222 is a deficient number, since it is larger than the sum of its proper divisors (100555560556114).

201111121112222 is a wasteful number, since it uses less digits than its factorization.

201111121112222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100555560556113.

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

Adding to 201111121112222 its reverse (222211121111102), we get a palindrome (423322242223324).

The spelling of 201111121112222 in words is "two hundred one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, two hundred twenty-two".