312202221121144 has 32 divisors (see below), whose sum is σ = 591999165987840. Its totient is φ = 154340580492000.

The previous prime is 312202221121123. The next prime is 312202221121151. The reversal of 312202221121144 is 441121122202213.

It is a happy 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, 299706832 + ... + 300746719.

It is an arithmetic number, because the mean of its divisors is an integer number (18499973937120).

Almost surely, 2^{312202221121144} is an apocalyptic number.

It is an amenable number.

312202221121144 is a deficient number, since it is larger than the sum of its proper divisors (279796944866696).

312202221121144 is a wasteful number, since it uses less digits than its factorization.

312202221121144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600454291 (or 600454287 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

Adding to 312202221121144 its reverse (441121122202213), we get a palindrome (753323343323357).

The spelling of 312202221121144 in words is "three hundred twelve trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, one hundred forty-four".