1155301220233 has 4 divisors (see below), whose sum is σ = 1155666478288. Its totient is φ = 1154935962180.

The previous prime is 1155301220231. The next prime is 1155301220261. The reversal of 1155301220233 is 3320221035511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1155301220233 - 2¹ = 1155301220231 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1155301220231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182624283 + ... + 182630608.

It is an arithmetic number, because the mean of its divisors is an integer number (288916619572).

Almost surely, 2^{1155301220233} is an apocalyptic number.

It is an amenable number.

1155301220233 is a deficient number, since it is larger than the sum of its proper divisors (365258055).

1155301220233 is an equidigital number, since it uses as much as digits as its factorization.

1155301220233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365258054.

The product of its (nonzero) digits is 5400, while the sum is 28.

Adding to 1155301220233 its reverse (3320221035511), we get a palindrome (4475522255744).

The spelling of 1155301220233 in words is "one trillion, one hundred fifty-five billion, three hundred one million, two hundred twenty thousand, two hundred thirty-three".