1121311120231 has 16 divisors (see below), whose sum is σ = 1185907564800. Its totient is φ = 1057278960000.

The previous prime is 1121311120207. The next prime is 1121311120253. The reversal of 1121311120231 is 1320211131211.

It is a cyclic number.

It is not a de Polignac number, because 1121311120231 - 2⁷ = 1121311120103 is a prime.

It is a super-2 number, since 2×1121311120231² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121311120199 and 1121311120208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121311120201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6404230 + ... + 6576988.

It is an arithmetic number, because the mean of its divisors is an integer number (74119222800).

Almost surely, 2^{1121311120231} is an apocalyptic number.

1121311120231 is a deficient number, since it is larger than the sum of its proper divisors (64596444569).

1121311120231 is a wasteful number, since it uses less digits than its factorization.

1121311120231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174390.

The product of its (nonzero) digits is 72, while the sum is 19.

Adding to 1121311120231 its reverse (1320211131211), we get a palindrome (2441522251442).

The spelling of 1121311120231 in words is "one trillion, one hundred twenty-one billion, three hundred eleven million, one hundred twenty thousand, two hundred thirty-one".