1223455911247 has 8 divisors (see below), whose sum is σ = 1225045418256. Its totient is φ = 1221866671872.

The previous prime is 1223455911217. The next prime is 1223455911269. The reversal of 1223455911247 is 7421195543221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1223455911247 - 2¹⁵ = 1223455878479 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223455911197 and 1223455911206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223455911217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10072863 + ... + 10193599.

It is an arithmetic number, because the mean of its divisors is an integer number (153130677282).

Almost surely, 2^{1223455911247} is an apocalyptic number.

1223455911247 is a deficient number, since it is larger than the sum of its proper divisors (1589507009).

1223455911247 is a wasteful number, since it uses less digits than its factorization.

1223455911247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133817.

The product of its digits is 604800, while the sum is 46.

It can be divided in two parts, 122 and 3455911247, that added together give a square (3455911369 = 58787²).

The spelling of 1223455911247 in words is "one trillion, two hundred twenty-three billion, four hundred fifty-five million, nine hundred eleven thousand, two hundred forty-seven".