1121220121203 has 144 divisors (see below), whose sum is σ = 2087444376576. Its totient is φ = 567309899520.

The previous prime is 1121220121163. The next prime is 1121220121211. The reversal of 1121220121203 is 3021210221211.

1121220121203 is a `hidden beast` number, since 1 + 121 + 220 + 121 + 203 = 666.

It is not a de Polignac number, because 1121220121203 - 2¹⁴ = 1121220104819 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121220121303) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 27949626 + ... + 27989712.

It is an arithmetic number, because the mean of its divisors is an integer number (14496141504).

Almost surely, 2^{1121220121203} is an apocalyptic number.

1121220121203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1121220121203 is a deficient number, since it is larger than the sum of its proper divisors (966224255373).

1121220121203 is a wasteful number, since it uses less digits than its factorization.

1121220121203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40234 (or 40218 counting only the distinct ones).

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

Adding to 1121220121203 its reverse (3021210221211), we get a palindrome (4142430342414).

The spelling of 1121220121203 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty-one thousand, two hundred three".