212343222221401 has 4 divisors (see below), whose sum is σ = 212343258086272. Its totient is φ = 212343186356532.

The previous prime is 212343222221387. The next prime is 212343222221407. The reversal of 212343222221401 is 104122222343212.

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 212343222221401 - 2¹³ = 212343222213209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212343222221407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6710685 + ... + 21673018.

It is an arithmetic number, because the mean of its divisors is an integer number (53085814521568).

Almost surely, 2^{212343222221401} is an apocalyptic number.

It is an amenable number.

212343222221401 is a deficient number, since it is larger than the sum of its proper divisors (35864871).

212343222221401 is an equidigital number, since it uses as much as digits as its factorization.

212343222221401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35864870.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 212343222221401 its reverse (104122222343212), we get a palindrome (316465444564613).

The spelling of 212343222221401 in words is "two hundred twelve trillion, three hundred forty-three billion, two hundred twenty-two million, two hundred twenty-one thousand, four hundred one".