1213320014381 has 2 divisors, whose sum is σ = 1213320014382. Its totient is φ = 1213320014380.

The previous prime is 1213320014363. The next prime is 1213320014447. The reversal of 1213320014381 is 1834100233121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 713237677156 + 500082337225 = 844534^2 + 707165^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213320014381 - 2²² = 1213315820077 is a prime.

It is a super-2 number, since 2×1213320014381² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213320014981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606660007190 + 606660007191.

It is an arithmetic number, because the mean of its divisors is an integer number (606660007191).

Almost surely, 2^{1213320014381} is an apocalyptic number.

It is an amenable number.

1213320014381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213320014381 is an equidigital number, since it uses as much as digits as its factorization.

1213320014381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The spelling of 1213320014381 in words is "one trillion, two hundred thirteen billion, three hundred twenty million, fourteen thousand, three hundred eighty-one".