1121022222001 has 32 divisors (see below), whose sum is σ = 1295287459200. Its totient is φ = 959486561280.

The previous prime is 1121022221989. The next prime is 1121022222029. The reversal of 1121022222001 is 1002222201211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121022222001 - 2²¹ = 1121020124849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1121022222031) 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, 111683955 + ... + 111693991.

It is an arithmetic number, because the mean of its divisors is an integer number (40477733100).

Almost surely, 2^{1121022222001} is an apocalyptic number.

1121022222001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121022222001 is a deficient number, since it is larger than the sum of its proper divisors (174265237199).

1121022222001 is a wasteful number, since it uses less digits than its factorization.

1121022222001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13329.

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

Adding to 1121022222001 its reverse (1002222201211), we get a palindrome (2123244423212).

It can be divided in two parts, 11 and 21022222001, that added together give a palindrome (21022222012).

The spelling of 1121022222001 in words is "one trillion, one hundred twenty-one billion, twenty-two million, two hundred twenty-two thousand, one".