1111220331023 has 32 divisors (see below), whose sum is σ = 1248045442560. Its totient is φ = 980615808000.

The previous prime is 1111220331019. The next prime is 1111220331029. The reversal of 1111220331023 is 3201330221111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1111220331023 - 2² = 1111220331019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111220330986 and 1111220331004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111220331029) 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, 285732263 + ... + 285736151.

It is an arithmetic number, because the mean of its divisors is an integer number (39001420080).

Almost surely, 2^{1111220331023} is an apocalyptic number.

1111220331023 is a deficient number, since it is larger than the sum of its proper divisors (136825111537).

1111220331023 is a wasteful number, since it uses less digits than its factorization.

1111220331023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6959.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1111220331023 its reverse (3201330221111), we get a palindrome (4312550552134).

The spelling of 1111220331023 in words is "one trillion, one hundred eleven billion, two hundred twenty million, three hundred thirty-one thousand, twenty-three".