1123220190251 has 2 divisors, whose sum is σ = 1123220190252. Its totient is φ = 1123220190250.

The previous prime is 1123220190247. The next prime is 1123220190263. The reversal of 1123220190251 is 1520910223211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1123220190251 - 2² = 1123220190247 is a prime.

It is not a weakly prime, because it can be changed into another prime (1123220190751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561610095125 + 561610095126.

It is an arithmetic number, because the mean of its divisors is an integer number (561610095126).

Almost surely, 2^{1123220190251} is an apocalyptic number.

1123220190251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123220190251 is an equidigital number, since it uses as much as digits as its factorization.

1123220190251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 1123220190251 in words is "one trillion, one hundred twenty-three billion, two hundred twenty million, one hundred ninety thousand, two hundred fifty-one".