212021020332 has 72 divisors (see below), whose sum is σ = 588588109200. Its totient is φ = 63817576320.

The previous prime is 212021020319. The next prime is 212021020357. The reversal of 212021020332 is 233020120212.

212021020332 is a `hidden beast` number, since 2 + 120 + 210 + 2 + 0 + 332 = 666.

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

It is an unprimeable number.

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, 1737663 + ... + 1855670.

It is an arithmetic number, because the mean of its divisors is an integer number (8174834850).

Almost surely, 2^212021020332 is an apocalyptic number.

212021020332 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212021020332 is an abundant number, since it is smaller than the sum of its proper divisors (376567088868).

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

212021020332 is a wasteful number, since it uses less digits than its factorization.

212021020332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593503 (or 3593498 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 212021020332 its reverse (233020120212), we get a palindrome (445041140544).

The spelling of 212021020332 in words is "two hundred twelve billion, twenty-one million, twenty thousand, three hundred thirty-two".