212133221112 has 16 divisors (see below), whose sum is σ = 530333052840. Its totient is φ = 70711073696.

The previous prime is 212133221101. The next prime is 212133221117. The reversal of 212133221112 is 211122331212.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212133221117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4419442083 + ... + 4419442130.

Almost surely, 2^212133221112 is an apocalyptic number.

It is an amenable number.

212133221112 is an abundant number, since it is smaller than the sum of its proper divisors (318199831728).

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

212133221112 is a wasteful number, since it uses less digits than its factorization.

212133221112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8838884222 (or 8838884218 counting only the distinct ones).

The product of its digits is 288, while the sum is 21.

Adding to 212133221112 its reverse (211122331212), we get a palindrome (423255552324).

The spelling of 212133221112 in words is "two hundred twelve billion, one hundred thirty-three million, two hundred twenty-one thousand, one hundred twelve".