212021201021 has 8 divisors (see below), whose sum is σ = 242312826624. Its totient is φ = 181730296080.

The previous prime is 212021201003. The next prime is 212021201027. The reversal of 212021201021 is 120102120212.

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

It is a cyclic number.

It is not a de Polignac number, because 212021201021 - 2¹⁴ = 212021184637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212021200987 and 212021201005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212021201027) 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, 821711 + ... + 1048451.

It is an arithmetic number, because the mean of its divisors is an integer number (30289103328).

Almost surely, 2^212021201021 is an apocalyptic number.

It is an amenable number.

212021201021 is a deficient number, since it is larger than the sum of its proper divisors (30291625603).

212021201021 is a wasteful number, since it uses less digits than its factorization.

212021201021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360331.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212021201021 its reverse (120102120212), we get a palindrome (332123321233).

The spelling of 212021201021 in words is "two hundred twelve billion, twenty-one million, two hundred one thousand, twenty-one".