1235188890223 has 2 divisors, whose sum is σ = 1235188890224. Its totient is φ = 1235188890222.

The previous prime is 1235188890217. The next prime is 1235188890269. The reversal of 1235188890223 is 3220988815321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1235188890223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235188890623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617594445111 + 617594445112.

It is an arithmetic number, because the mean of its divisors is an integer number (617594445112).

Almost surely, 2^{1235188890223} is an apocalyptic number.

1235188890223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235188890223 is an equidigital number, since it uses as much as digits as its factorization.

1235188890223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1658880, while the sum is 52.

The spelling of 1235188890223 in words is "one trillion, two hundred thirty-five billion, one hundred eighty-eight million, eight hundred ninety thousand, two hundred twenty-three".