1217283401 has 2 divisors, whose sum is σ = 1217283402. Its totient is φ = 1217283400.

The previous prime is 1217283377. The next prime is 1217283413. The reversal of 1217283401 is 1043827121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1200276025 + 17007376 = 34645^2 + 4124^2 .

It is an emirp because it is prime and its reverse (1043827121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1217283401 - 2⁶ = 1217283337 is a prime.

It is not a weakly prime, because it can be changed into another prime (1211283401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608641700 + 608641701.

It is an arithmetic number, because the mean of its divisors is an integer number (608641701).

Almost surely, 2^1217283401 is an apocalyptic number.

It is an amenable number.

1217283401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217283401 is an equidigital number, since it uses as much as digits as its factorization.

1217283401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 1217283401 is about 34889.5887192727. The cubic root of 1217283401 is about 1067.7360350626.

The spelling of 1217283401 in words is "one billion, two hundred seventeen million, two hundred eighty-three thousand, four hundred one".