2222221110001 has 8 divisors (see below), whose sum is σ = 2227552594920. Its totient is φ = 2216895948288.

The previous prime is 2222221109993. The next prime is 2222221110007. The reversal of 2222221110001 is 1000111222222.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 20484479376 + 2201736630625 = 143124^2 + 1483825^2 .

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 2222221110001 - 2³ = 2222221109993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2222221110007) 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, 876706 + ... + 2283211.

It is an arithmetic number, because the mean of its divisors is an integer number (278444074365).

Almost surely, 2^{2222221110001} is an apocalyptic number.

It is an amenable number.

2222221110001 is a deficient number, since it is larger than the sum of its proper divisors (5331484919).

2222221110001 is an equidigital number, since it uses as much as digits as its factorization.

2222221110001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3161603.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2222221110001 its reverse (1000111222222), we get a palindrome (3222332332223).

The spelling of 2222221110001 in words is "two trillion, two hundred twenty-two billion, two hundred twenty-one million, one hundred ten thousand, one".