2011201221222 has 24 divisors (see below), whose sum is σ = 4357630138680. Its totient is φ = 670396177440.

The previous prime is 2011201221199. The next prime is 2011201221251. The reversal of 2011201221222 is 2221221021102.

It is a happy number.

2011201221222 is a `hidden beast` number, since 20 + 1 + 1 + 201 + 221 + 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 = 2011201221195 and 2011201221204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4099722 + ... + 4564002.

It is an arithmetic number, because the mean of its divisors is an integer number (181567922445).

Almost surely, 2^{2011201221222} is an apocalyptic number.

2011201221222 is an abundant number, since it is smaller than the sum of its proper divisors (2346428917458).

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

2011201221222 is a wasteful number, since it uses less digits than its factorization.

2011201221222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704948 (or 704945 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2011201221222 its reverse (2221221021102), we get a palindrome (4232422242324).

The spelling of 2011201221222 in words is "two trillion, eleven billion, two hundred one million, two hundred twenty-one thousand, two hundred twenty-two".