1312120312222 has 8 divisors (see below), whose sum is σ = 1970166526272. Its totient is φ = 655398136800.

The previous prime is 1312120312211. The next prime is 1312120312231. The reversal of 1312120312222 is 2222130212131.

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

It is a junction number, because it is equal to n+sod(n) for n = 1312120312193 and 1312120312202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 331007179 + ... + 331011142.

It is an arithmetic number, because the mean of its divisors is an integer number (246270815784).

Almost surely, 2^{1312120312222} is an apocalyptic number.

1312120312222 is a deficient number, since it is larger than the sum of its proper divisors (658046214050).

1312120312222 is an equidigital number, since it uses as much as digits as its factorization.

1312120312222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662019314.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1312120312222 its reverse (2222130212131), we get a palindrome (3534250524353).

The spelling of 1312120312222 in words is "one trillion, three hundred twelve billion, one hundred twenty million, three hundred twelve thousand, two hundred twenty-two".