212021102321 has 8 divisors (see below), whose sum is σ = 246881715264. Its totient is φ = 178303460400.

The previous prime is 212021102273. The next prime is 212021102323. The reversal of 212021102321 is 123201120212.

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 212021102321 - 2²² = 212016908017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212021102321.

It is not an unprimeable number, because it can be changed into a prime (212021102323) 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, 285742355 + ... + 285743096.

It is an arithmetic number, because the mean of its divisors is an integer number (30860214408).

Almost surely, 2^212021102321 is an apocalyptic number.

It is an amenable number.

212021102321 is a deficient number, since it is larger than the sum of its proper divisors (34860612943).

212021102321 is an equidigital number, since it uses as much as digits as its factorization.

212021102321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571485511.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 212021102321 its reverse (123201120212), we get a palindrome (335222222533).

The spelling of 212021102321 in words is "two hundred twelve billion, twenty-one million, one hundred two thousand, three hundred twenty-one".