33000129812 has 24 divisors (see below), whose sum is σ = 62198842272. Its totient is φ = 15229288800.

The previous prime is 33000129809. The next prime is 33000129839. The reversal of 33000129812 is 21892100033.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 608987 + ... + 660957.

It is an arithmetic number, because the mean of its divisors is an integer number (2591618428).

Almost surely, 2^33000129812 is an apocalyptic number.

It is an amenable number.

33000129812 is a deficient number, since it is larger than the sum of its proper divisors (29198712460).

33000129812 is a wasteful number, since it uses less digits than its factorization.

33000129812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64199 (or 64197 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

Adding to 33000129812 its reverse (21892100033), we get a palindrome (54892229845).

The spelling of 33000129812 in words is "thirty-three billion, one hundred twenty-nine thousand, eight hundred twelve".