1421211313 has 2 divisors, whose sum is σ = 1421211314. Its totient is φ = 1421211312.

The previous prime is 1421211307. The next prime is 1421211347. The reversal of 1421211313 is 3131121241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1023488064 + 397723249 = 31992^2 + 19943^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421211313 is a prime.

It is a super-3 number, since 3×1421211313³ (a number of 28 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (1421211353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710605656 + 710605657.

It is an arithmetic number, because the mean of its divisors is an integer number (710605657).

Almost surely, 2^1421211313 is an apocalyptic number.

It is an amenable number.

1421211313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421211313 is an equidigital number, since it uses as much as digits as its factorization.

1421211313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 1421211313 is about 37698.9563913910. The cubic root of 1421211313 is about 1124.3103758329.

Adding to 1421211313 its reverse (3131121241), we get a palindrome (4552332554).

The spelling of 1421211313 in words is "one billion, four hundred twenty-one million, two hundred eleven thousand, three hundred thirteen".