33320121012 has 96 divisors (see below), whose sum is σ = 87884375040. Its totient is φ = 10914341760.

The previous prime is 33320120993. The next prime is 33320121031. The reversal of 33320121012 is 21012102333.

It is an interprime number because it is at equal distance from previous prime (33320120993) and next prime (33320121031).

It is a super-2 number, since 2×33320121012² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10519453 + ... + 10522619.

It is an arithmetic number, because the mean of its divisors is an integer number (915462240).

Almost surely, 2^33320121012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 33320121012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43942187520).

33320121012 is an abundant number, since it is smaller than the sum of its proper divisors (54564254028).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33320121012 is a wasteful number, since it uses less digits than its factorization.

33320121012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4838 (or 4830 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 33320121012 its reverse (21012102333), we get a palindrome (54332223345).

The spelling of 33320121012 in words is "thirty-three billion, three hundred twenty million, one hundred twenty-one thousand, twelve".