212022000221 has 4 divisors (see below), whose sum is σ = 212031020352. Its totient is φ = 212012980092.

The previous prime is 212022000199. The next prime is 212022000241. The reversal of 212022000221 is 122000220212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212022000221 - 2²² = 212017805917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212022000196 and 212022000205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022000241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4474715 + ... + 4521848.

It is an arithmetic number, because the mean of its divisors is an integer number (53007755088).

Almost surely, 2^212022000221 is an apocalyptic number.

It is an amenable number.

212022000221 is a deficient number, since it is larger than the sum of its proper divisors (9020131).

212022000221 is an equidigital number, since it uses as much as digits as its factorization.

212022000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9020130.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212022000221 its reverse (122000220212), we get a palindrome (334022220433).

The spelling of 212022000221 in words is "two hundred twelve billion, twenty-two million, two hundred twenty-one", and thus it is an aban number.