312221344121223 has 16 divisors (see below), whose sum is σ = 427765712431200. Its totient is φ = 202418042103936.

The previous prime is 312221344121123. The next prime is 312221344121231. The reversal of 312221344121223 is 322121443122213.

It is not a de Polignac number, because 312221344121223 - 2¹³ = 312221344113031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312221344121123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 721385740 + ... + 721818417.

It is an arithmetic number, because the mean of its divisors is an integer number (26735357026950).

Almost surely, 2^{312221344121223} is an apocalyptic number.

312221344121223 is a deficient number, since it is larger than the sum of its proper divisors (115544368309977).

312221344121223 is a wasteful number, since it uses less digits than its factorization.

312221344121223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443206146.

The product of its digits is 27648, while the sum is 33.

Adding to 312221344121223 its reverse (322121443122213), we get a palindrome (634342787243436).

The spelling of 312221344121223 in words is "three hundred twelve trillion, two hundred twenty-one billion, three hundred forty-four million, one hundred twenty-one thousand, two hundred twenty-three".