212022201 has 4 divisors (see below), whose sum is σ = 282696272. Its totient is φ = 141348132.

The previous prime is 212022191. The next prime is 212022227. The reversal of 212022201 is 102220212.

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 not a de Polignac number, because 212022201 - 2¹¹ = 212020153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212022241) 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, 35337031 + ... + 35337036.

It is an arithmetic number, because the mean of its divisors is an integer number (70674068).

Almost surely, 2^212022201 is an apocalyptic number.

It is an amenable number.

212022201 is a deficient number, since it is larger than the sum of its proper divisors (70674071).

212022201 is an equidigital number, since it uses as much as digits as its factorization.

212022201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70674070.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 212022201 is about 14560.9821440726. The cubic root of 212022201 is about 596.2940092950.

Adding to 212022201 its reverse (102220212), we get a palindrome (314242413).

The spelling of 212022201 in words is "two hundred twelve million, twenty-two thousand, two hundred one".