212362616221 has 8 divisors (see below), whose sum is σ = 253252312704. Its totient is φ = 174110964720.

The previous prime is 212362616189. The next prime is 212362616227. The reversal of 212362616221 is 122616263212.

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

It is not a de Polignac number, because 212362616221 - 2⁵ = 212362616189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212362616227) 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, 659511070 + ... + 659511391.

It is an arithmetic number, because the mean of its divisors is an integer number (31656539088).

Almost surely, 2^212362616221 is an apocalyptic number.

It is an amenable number.

212362616221 is a deficient number, since it is larger than the sum of its proper divisors (40889696483).

212362616221 is a wasteful number, since it uses less digits than its factorization.

212362616221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319022491.

The product of its digits is 20736, while the sum is 34.

Adding to 212362616221 its reverse (122616263212), we get a palindrome (334978879433).

The spelling of 212362616221 in words is "two hundred twelve billion, three hundred sixty-two million, six hundred sixteen thousand, two hundred twenty-one".