1122222221001 has 120 divisors (see below), whose sum is σ = 1957397802624. Its totient is φ = 627637040640.

The previous prime is 1122222220981. The next prime is 1122222221009. The reversal of 1122222221001 is 1001222222211.

It is a happy number.

1122222221001 is a `hidden beast` number, since 11 + 222 + 222 + 210 + 0 + 1 = 666.

It is not a de Polignac number, because 1122222221001 - 2⁵ = 1122222220969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1122222221009) by changing a digit.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 413950036 + ... + 413952746.

Almost surely, 2^{1122222221001} is an apocalyptic number.

It is an amenable number.

1122222221001 is a deficient number, since it is larger than the sum of its proper divisors (835175581623).

1122222221001 is an equidigital number, since it uses as much as digits as its factorization.

1122222221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3013 (or 2931 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1122222221001 its reverse (1001222222211), we get a palindrome (2123444443212).

The spelling of 1122222221001 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one".