212133031020 has 36 divisors (see below), whose sum is σ = 643470194640. Its totient is φ = 56568808224.

The previous prime is 212133031001. The next prime is 212133031027. The reversal of 212133031020 is 20130331212.

212133031020 is a `hidden beast` number, since 2 + 1 + 2 + 1 + 330 + 310 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a junction number, because it is equal to n+sod(n) for n = 212133030984 and 212133031002.

It is not an unprimeable number, because it can be changed into a prime (212133031027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 589258240 + ... + 589258599.

Almost surely, 2^212133031020 is an apocalyptic number.

212133031020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212133031020 is an abundant number, since it is smaller than the sum of its proper divisors (431337163620).

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

212133031020 is a wasteful number, since it uses less digits than its factorization.

212133031020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178516854 (or 1178516849 counting only the distinct ones).

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

Adding to 212133031020 its reverse (20130331212), we get a palindrome (232263362232).

The spelling of 212133031020 in words is "two hundred twelve billion, one hundred thirty-three million, thirty-one thousand, twenty".