222221111001 has 16 divisors (see below), whose sum is σ = 307094568000. Its totient is φ = 142820998848.

The previous prime is 222221110997. The next prime is 222221111017. The reversal of 222221111001 is 100111122222.

It is not a de Polignac number, because 222221111001 - 2² = 222221110997 is a prime.

It is a super-3 number, since 3×222221111001³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (222221111701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9171351 + ... + 9195548.

It is an arithmetic number, because the mean of its divisors is an integer number (19193410500).

Almost surely, 2^222221111001 is an apocalyptic number.

It is an amenable number.

222221111001 is a deficient number, since it is larger than the sum of its proper divisors (84873456999).

222221111001 is a wasteful number, since it uses less digits than its factorization.

222221111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18367048.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 222221111001 its reverse (100111122222), we get a palindrome (322332233223).

The spelling of 222221111001 in words is "two hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one".