33212212100 has 18 divisors (see below), whose sum is σ = 72070500474. Its totient is φ = 13284884800.

The previous prime is 33212212081. The next prime is 33212212109. The reversal of 33212212100 is 121221233.

It can be written as a sum of positive squares in 3 ways, for example, as 65536 + 33212146564 = 256^2 + 182242^2 .

It is a super-2 number, since 2×33212212100² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (33212212109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 166060961 + ... + 166061160.

It is an arithmetic number, because the mean of its divisors is an integer number (4003916693).

Almost surely, 2^33212212100 is an apocalyptic number.

It is an amenable number.

33212212100 is an abundant number, since it is smaller than the sum of its proper divisors (38858288374).

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

33212212100 is a wasteful number, since it uses less digits than its factorization.

33212212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332122135 (or 332122128 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 33212212100 its reverse (121221233), we get a palindrome (33333433333).

The spelling of 33212212100 in words is "thirty-three billion, two hundred twelve million, two hundred twelve thousand, one hundred".