1222221000001 has 8 divisors (see below), whose sum is σ = 1262431654400. Its totient is φ = 1182059356320.

The previous prime is 1222220999983. The next prime is 1222221000073. The reversal of 1222221000001 is 1000001222221.

It is a happy number.

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 1222221000001 - 2¹⁷ = 1222220868929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1222221006001) 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, 12201981 + ... + 12301738.

It is an arithmetic number, because the mean of its divisors is an integer number (157803956800).

Almost surely, 2^{1222221000001} is an apocalyptic number.

It is an amenable number.

1222221000001 is a deficient number, since it is larger than the sum of its proper divisors (40210654399).

1222221000001 is a wasteful number, since it uses less digits than its factorization.

1222221000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24505359.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 1222221000001 its reverse (1000001222221), we get a palindrome (2222222222222).

The spelling of 1222221000001 in words is "one trillion, two hundred twenty-two billion, two hundred twenty-one million, one", and thus it is an aban number.