33220012100 has 36 divisors (see below), whose sum is σ = 78640831248. Its totient is φ = 12080004000.

The previous prime is 33220012019. The next prime is 33220012117. The reversal of 33220012100 is 121002233.

It is a happy number.

It is a super-2 number, since 2×33220012100² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15098906 + ... + 15101105.

Almost surely, 2^33220012100 is an apocalyptic number.

It is an amenable number.

33220012100 is an abundant number, since it is smaller than the sum of its proper divisors (45420819148).

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

33220012100 is a wasteful number, since it uses less digits than its factorization.

33220012100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30200036 (or 30200029 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 33220012100 its reverse (121002233), we get a palindrome (33341014333).

The spelling of 33220012100 in words is "thirty-three billion, two hundred twenty million, twelve thousand, one hundred".