222221122221001 has 32 divisors (see below), whose sum is σ = 233645394533760. Its totient is φ = 211185817920000.

The previous prime is 222221122220987. The next prime is 222221122221017. The reversal of 222221122221001 is 100122221122222.

222221122221001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 222221122221001 - 2¹³ = 222221122212809 is a prime.

It is a super-2 number, since 2×222221122221001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222221122221071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61240351 + ... + 64767451.

It is an arithmetic number, because the mean of its divisors is an integer number (7301418579180).

Almost surely, 2^{222221122221001} is an apocalyptic number.

It is an amenable number.

222221122221001 is a deficient number, since it is larger than the sum of its proper divisors (11424272312759).

222221122221001 is a wasteful number, since it uses less digits than its factorization.

222221122221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3527497.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 222221122221001 its reverse (100122221122222), we get a palindrome (322343343343223).

The spelling of 222221122221001 in words is "two hundred twenty-two trillion, two hundred twenty-one billion, one hundred twenty-two million, two hundred twenty-one thousand, one".