212021032212 has 72 divisors (see below), whose sum is σ = 584714894400. Its totient is φ = 64243211520.

The previous prime is 212021032211. The next prime is 212021032297. The reversal of 212021032212 is 212230120212.

212021032212 is a `hidden beast` number, since 2 + 120 + 210 + 322 + 12 = 666.

It is a super-2 number, since 2×212021032212² (a number of 23 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 not an unprimeable number, because it can be changed into a prime (212021032211) 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 23 ways as a sum of consecutive naturals, for example, 8205289 + ... + 8231087.

It is an arithmetic number, because the mean of its divisors is an integer number (8121040200).

Almost surely, 2^212021032212 is an apocalyptic number.

212021032212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212021032212 is an abundant number, since it is smaller than the sum of its proper divisors (372693862188).

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

212021032212 is a wasteful number, since it uses less digits than its factorization.

212021032212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46573 (or 46568 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 212021032212 its reverse (212230120212), we get a palindrome (424251152424).

The spelling of 212021032212 in words is "two hundred twelve billion, twenty-one million, thirty-two thousand, two hundred twelve".