1224861401 has 2 divisors, whose sum is σ = 1224861402. Its totient is φ = 1224861400.

The previous prime is 1224861383. The next prime is 1224861409. The reversal of 1224861401 is 1041684221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1219685776 + 5175625 = 34924^2 + 2275^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224861401 - 2²⁶ = 1157752537 is a prime.

It is not a weakly prime, because it can be changed into another prime (1224861409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612430700 + 612430701.

It is an arithmetic number, because the mean of its divisors is an integer number (612430701).

Almost surely, 2^1224861401 is an apocalyptic number.

It is an amenable number.

1224861401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224861401 is an equidigital number, since it uses as much as digits as its factorization.

1224861401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 1224861401 is about 34998.0199582776. The cubic root of 1224861401 is about 1069.9471255207.

The spelling of 1224861401 in words is "one billion, two hundred twenty-four million, eight hundred sixty-one thousand, four hundred one".