33131000013212 has 72 divisors (see below), whose sum is σ = 61053658876896. Its totient is φ = 15729445759104.

The previous prime is 33131000013197. The next prime is 33131000013217. The reversal of 33131000013212 is 21231000013133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (33131000013217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 267440678 + ... + 267564530.

Almost surely, 2^{33131000013212} is an apocalyptic number.

It is an amenable number.

33131000013212 is a deficient number, since it is larger than the sum of its proper divisors (27922658863684).

33131000013212 is a wasteful number, since it uses less digits than its factorization.

33131000013212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124827 (or 124802 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 33131000013212 its reverse (21231000013133), we get a palindrome (54362000026345).

The spelling of 33131000013212 in words is "thirty-three trillion, one hundred thirty-one billion, thirteen thousand, two hundred twelve".