212021441021 has 8 divisors (see below), whose sum is σ = 228875730720. Its totient is φ = 195245001072.

The previous prime is 212021441003. The next prime is 212021441033. The reversal of 212021441021 is 120144120212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212021441021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212021440984 and 212021441002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021444021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19456775 + ... + 19467668.

It is an arithmetic number, because the mean of its divisors is an integer number (28609466340).

Almost surely, 2^212021441021 is an apocalyptic number.

It is an amenable number.

212021441021 is a deficient number, since it is larger than the sum of its proper divisors (16854289699).

212021441021 is a wasteful number, since it uses less digits than its factorization.

212021441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38924875.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 212021441021 its reverse (120144120212), we get a palindrome (332165561233).

The spelling of 212021441021 in words is "two hundred twelve billion, twenty-one million, four hundred forty-one thousand, twenty-one".