1322012213 has 8 divisors (see below), whose sum is σ = 1325927448. Its totient is φ = 1318104064.

The previous prime is 1322012203. The next prime is 1322012227. The reversal of 1322012213 is 3122102231.

It can be written as a sum of positive squares in 4 ways, for example, as 365842129 + 956170084 = 19127^2 + 30922^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1322012213 - 2¹² = 1322008117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1322012191 and 1322012200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1322012203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 778181 + ... + 779877.

It is an arithmetic number, because the mean of its divisors is an integer number (165740931).

Almost surely, 2^1322012213 is an apocalyptic number.

It is an amenable number.

1322012213 is a deficient number, since it is larger than the sum of its proper divisors (3915235).

1322012213 is a wasteful number, since it uses less digits than its factorization.

1322012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3543.

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

The square root of 1322012213 is about 36359.4858737029. The cubic root of 1322012213 is about 1097.5184314822.

Adding to 1322012213 its reverse (3122102231), we get a palindrome (4444114444).

The spelling of 1322012213 in words is "one billion, three hundred twenty-two million, twelve thousand, two hundred thirteen".