222221001011 has 4 divisors (see below), whose sum is σ = 222514556592. Its totient is φ = 221927445432.

The previous prime is 222221001001. The next prime is 222221001017. The reversal of 222221001011 is 110100122222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110100122222 = 2 ⋅55050061111.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222221001011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221001017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146776655 + ... + 146778168.

It is an arithmetic number, because the mean of its divisors is an integer number (55628639148).

Almost surely, 2^222221001011 is an apocalyptic number.

222221001011 is a deficient number, since it is larger than the sum of its proper divisors (293555581).

222221001011 is an equidigital number, since it uses as much as digits as its factorization.

222221001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293555580.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 222221001011 its reverse (110100122222), we get a palindrome (332321123233).

The spelling of 222221001011 in words is "two hundred twenty-two billion, two hundred twenty-one million, one thousand, eleven".