1300221213421 has 4 divisors (see below), whose sum is σ = 1400238229852. Its totient is φ = 1200204196992.

The previous prime is 1300221213407. The next prime is 1300221213433. The reversal of 1300221213421 is 1243121220031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 619825544100 + 680395669321 = 787290^2 + 824861^2 .

It is a cyclic number.

It is not a de Polignac number, because 1300221213421 - 2³³ = 1291631278829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1300221213392 and 1300221213401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300221213491) 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, 50008508196 + ... + 50008508221.

It is an arithmetic number, because the mean of its divisors is an integer number (350059557463).

Almost surely, 2^{1300221213421} is an apocalyptic number.

It is an amenable number.

1300221213421 is a deficient number, since it is larger than the sum of its proper divisors (100017016431).

1300221213421 is a wasteful number, since it uses less digits than its factorization.

1300221213421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100017016430.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1300221213421 its reverse (1243121220031), we get a palindrome (2543342433452).

The spelling of 1300221213421 in words is "one trillion, three hundred billion, two hundred twenty-one million, two hundred thirteen thousand, four hundred twenty-one".