213033122312 has 32 divisors (see below), whose sum is σ = 422955312120. Its totient is φ = 100245688320.

The previous prime is 213033122303. The next prime is 213033122321. The reversal of 213033122312 is 213221330312.

It is an interprime number because it is at equal distance from previous prime (213033122303) and next prime (213033122321).

It can be written as a sum of positive squares in 4 ways, for example, as 171964478596 + 41068643716 = 414686^2 + 202654^2 .

It is a super-2 number, since 2×213033122312² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

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, 4280612 + ... + 4330092.

Almost surely, 2^213033122312 is an apocalyptic number.

It is an amenable number.

213033122312 is a deficient number, since it is larger than the sum of its proper divisors (209922189808).

213033122312 is a wasteful number, since it uses less digits than its factorization.

213033122312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81161 (or 81157 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 213033122312 its reverse (213221330312), we get a palindrome (426254452624).

The spelling of 213033122312 in words is "two hundred thirteen billion, thirty-three million, one hundred twenty-two thousand, three hundred twelve".