222121122011 has 8 divisors (see below), whose sum is σ = 234558715920. Its totient is φ = 209758228992.

The previous prime is 222121121977. The next prime is 222121122023. The reversal of 222121122011 is 110221121222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 222121122011 - 2²² = 222116927707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222121122061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18669110 + ... + 18681003.

It is an arithmetic number, because the mean of its divisors is an integer number (29319839490).

Almost surely, 2^222121122011 is an apocalyptic number.

222121122011 is a deficient number, since it is larger than the sum of its proper divisors (12437593909).

222121122011 is a wasteful number, since it uses less digits than its factorization.

222121122011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37350445.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 222121122011 its reverse (110221121222), we get a palindrome (332342243233).

The spelling of 222121122011 in words is "two hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-two thousand, eleven".