312223001222 has 128 divisors (see below), whose sum is σ = 555685678080. Its totient is φ = 131160902400.

The previous prime is 312223001221. The next prime is 312223001243. The reversal of 312223001222 is 222100322213.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 312223001194 and 312223001203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312223001221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 380295572 + ... + 380296392.

It is an arithmetic number, because the mean of its divisors is an integer number (4341294360).

Almost surely, 2^312223001222 is an apocalyptic number.

312223001222 is a deficient number, since it is larger than the sum of its proper divisors (243462676858).

312223001222 is a wasteful number, since it uses less digits than its factorization.

312223001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 312223001222 its reverse (222100322213), we get a palindrome (534323323435).

The spelling of 312223001222 in words is "three hundred twelve billion, two hundred twenty-three million, one thousand, two hundred twenty-two".