1220254723 has 2 divisors, whose sum is σ = 1220254724. Its totient is φ = 1220254722.

The previous prime is 1220254691. The next prime is 1220254733. The reversal of 1220254723 is 3274520221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1220254723 - 2⁵ = 1220254691 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1220254691 and 1220254700.

It is not a weakly prime, because it can be changed into another prime (1220254733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610127361 + 610127362.

It is an arithmetic number, because the mean of its divisors is an integer number (610127362).

Almost surely, 2^1220254723 is an apocalyptic number.

1220254723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220254723 is an equidigital number, since it uses as much as digits as its factorization.

1220254723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 1220254723 is about 34932.1445519739. The cubic root of 1220254723 is about 1068.6040908478.

Adding to 1220254723 its reverse (3274520221), we get a palindrome (4494774944).

The spelling of 1220254723 in words is "one billion, two hundred twenty million, two hundred fifty-four thousand, seven hundred twenty-three".