1223250443951 has 2 divisors, whose sum is σ = 1223250443952. Its totient is φ = 1223250443950.

The previous prime is 1223250443929. The next prime is 1223250443957. The reversal of 1223250443951 is 1593440523221.

It is a strong prime.

It is an emirp because it is prime and its reverse (1593440523221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1223250443951 - 2⁶ = 1223250443887 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1223250443899 and 1223250443908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223250443957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611625221975 + 611625221976.

It is an arithmetic number, because the mean of its divisors is an integer number (611625221976).

Almost surely, 2^{1223250443951} is an apocalyptic number.

1223250443951 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223250443951 is an equidigital number, since it uses as much as digits as its factorization.

1223250443951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 41.

The spelling of 1223250443951 in words is "one trillion, two hundred twenty-three billion, two hundred fifty million, four hundred forty-three thousand, nine hundred fifty-one".