33320012213 has 4 divisors (see below), whose sum is σ = 33321418380. Its totient is φ = 33318606048.

The previous prime is 33320012183. The next prime is 33320012251. The reversal of 33320012213 is 31221002333.

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 27867961969 + 5452050244 = 166937^2 + 73838^2 .

It is a cyclic number.

It is not a de Polignac number, because 33320012213 - 2¹⁸ = 33319750069 is a prime.

It is a super-2 number, since 2×33320012213² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33320015213) 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, 666920 + ... + 715137.

It is an arithmetic number, because the mean of its divisors is an integer number (8330354595).

Almost surely, 2^33320012213 is an apocalyptic number.

It is an amenable number.

33320012213 is a deficient number, since it is larger than the sum of its proper divisors (1406167).

33320012213 is a wasteful number, since it uses less digits than its factorization.

33320012213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406166.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 33320012213 its reverse (31221002333), we get a palindrome (64541014546).

The spelling of 33320012213 in words is "thirty-three billion, three hundred twenty million, twelve thousand, two hundred thirteen".