33166531021012 has 24 divisors (see below), whose sum is σ = 59914778443520. Its totient is φ = 16048041554880.

The previous prime is 33166531020971. The next prime is 33166531021027. The reversal of 33166531021012 is 21012013566133.

It is a super-2 number, since 2×33166531021012² (a number of 28 digits) contains 22 as substring.

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, 4895539 + ... + 9502597.

Almost surely, 2^{33166531021012} is an apocalyptic number.

It is an amenable number.

33166531021012 is a deficient number, since it is larger than the sum of its proper divisors (26748247422508).

33166531021012 is a wasteful number, since it uses less digits than its factorization.

33166531021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4665151 (or 4665149 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 34.

Adding to 33166531021012 its reverse (21012013566133), we get a palindrome (54178544587145).

The spelling of 33166531021012 in words is "thirty-three trillion, one hundred sixty-six billion, five hundred thirty-one million, twenty-one thousand, twelve".