212222344445 has 8 divisors (see below), whose sum is σ = 254669288544. Its totient is φ = 169776225424.

The previous prime is 212222344417. The next prime is 212222344459. The reversal of 212222344445 is 544443222212.

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 212222344445 - 2¹² = 212222340349 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 872762 + ... + 1089108.

It is an arithmetic number, because the mean of its divisors is an integer number (31833661068).

Almost surely, 2^212222344445 is an apocalyptic number.

It is an amenable number.

212222344445 is a deficient number, since it is larger than the sum of its proper divisors (42446944099).

212222344445 is a wasteful number, since it uses less digits than its factorization.

212222344445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412539.

The product of its digits is 122880, while the sum is 35.

Adding to 212222344445 its reverse (544443222212), we get a palindrome (756665566657).

The spelling of 212222344445 in words is "two hundred twelve billion, two hundred twenty-two million, three hundred forty-four thousand, four hundred forty-five".