1121221223001 has 56 divisors (see below), whose sum is σ = 1837721583360. Its totient is φ = 678107052000.

The previous prime is 1121221222993. The next prime is 1121221223029. The reversal of 1121221223001 is 1003221221211.

1121221223001 is a `hidden beast` number, since 1 + 121 + 221 + 22 + 300 + 1 = 666.

It is not a de Polignac number, because 1121221223001 - 2³ = 1121221222993 is a prime.

It is a super-3 number, since 3×1121221223001³ (a number of 37 digits) contains 333 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1121221223071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 3695151 + ... + 3987051.

Almost surely, 2^{1121221223001} is an apocalyptic number.

1121221223001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121221223001 is a deficient number, since it is larger than the sum of its proper divisors (716500360359).

1121221223001 is an equidigital number, since it uses as much as digits as its factorization.

1121221223001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292409 (or 292394 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1121221223001 its reverse (1003221221211), we get a palindrome (2124442444212).

The spelling of 1121221223001 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, two hundred twenty-three thousand, one".