1320122213 has 4 divisors (see below), whose sum is σ = 1321379328. Its totient is φ = 1318865100.

The previous prime is 1320122203. The next prime is 1320122333. The reversal of 1320122213 is 3122210231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1320122213 - 2²² = 1315927909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1320122191 and 1320122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320122203) 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, 626981 + ... + 629082.

It is an arithmetic number, because the mean of its divisors is an integer number (330344832).

Almost surely, 2^1320122213 is an apocalyptic number.

It is an amenable number.

1320122213 is a deficient number, since it is larger than the sum of its proper divisors (1257115).

1320122213 is a wasteful number, since it uses less digits than its factorization.

1320122213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257114.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1320122213 is about 36333.4861112996. The cubic root of 1320122213 is about 1096.9951637177.

Adding to 1320122213 its reverse (3122210231), we get a palindrome (4442332444).

The spelling of 1320122213 in words is "one billion, three hundred twenty million, one hundred twenty-two thousand, two hundred thirteen".