1213412401 has 4 divisors (see below), whose sum is σ = 1213482100. Its totient is φ = 1213342704.

The previous prime is 1213412381. The next prime is 1213412413. The reversal of 1213412401 is 1042143121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 998496801 + 214915600 = 31599^2 + 14660^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213412401 - 2⁷ = 1213412273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1213412471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15895 + ... + 51763.

It is an arithmetic number, because the mean of its divisors is an integer number (303370525).

Almost surely, 2^1213412401 is an apocalyptic number.

It is an amenable number.

1213412401 is a deficient number, since it is larger than the sum of its proper divisors (69699).

1213412401 is an equidigital number, since it uses as much as digits as its factorization.

1213412401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69698.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1213412401 is about 34834.0695440541. The cubic root of 1213412401 is about 1066.6030216691.

Adding to 1213412401 its reverse (1042143121), we get a palindrome (2255555522).

The spelling of 1213412401 in words is "one billion, two hundred thirteen million, four hundred twelve thousand, four hundred one".