2345221213 has 8 divisors (see below), whose sum is σ = 2568802680. Its totient is φ = 2131153920.

The previous prime is 2345221187. The next prime is 2345221231. The reversal of 2345221213 is 3121225432.

It can be written as a sum of positive squares in 4 ways, for example, as 411156729 + 1934064484 = 20277^2 + 43978^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2345221213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2345221513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2378028 + ... + 2379013.

It is an arithmetic number, because the mean of its divisors is an integer number (321100335).

Almost surely, 2^2345221213 is an apocalyptic number.

It is an amenable number.

2345221213 is a deficient number, since it is larger than the sum of its proper divisors (223581467).

2345221213 is a wasteful number, since it uses less digits than its factorization.

2345221213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4757087.

The product of its digits is 2880, while the sum is 25.

The square root of 2345221213 is about 48427.4840663853. The cubic root of 2345221213 is about 1328.6010906057.

Adding to 2345221213 its reverse (3121225432), we get a palindrome (5466446645).

The spelling of 2345221213 in words is "two billion, three hundred forty-five million, two hundred twenty-one thousand, two hundred thirteen".