212222010221 has 8 divisors (see below), whose sum is σ = 228560285184. Its totient is φ = 195885664560.

The previous prime is 212222010173. The next prime is 212222010227. The reversal of 212222010221 is 122010222212.

It is a happy number.

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 212222010221 - 2²² = 212217815917 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 212222010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212222010227) 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, 249701 + ... + 697706.

It is an arithmetic number, because the mean of its divisors is an integer number (28570035648).

Almost surely, 2^212222010221 is an apocalyptic number.

It is an amenable number.

212222010221 is a deficient number, since it is larger than the sum of its proper divisors (16338274963).

212222010221 is a wasteful number, since it uses less digits than its factorization.

212222010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 964651.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212222010221 its reverse (122010222212), we get a palindrome (334232232433).

The spelling of 212222010221 in words is "two hundred twelve billion, two hundred twenty-two million, ten thousand, two hundred twenty-one".