1321012222 has 8 divisors (see below), whose sum is σ = 2067671376. Its totient is φ = 631788432.

The previous prime is 1321012211. The next prime is 1321012237. The reversal of 1321012222 is 2222101231.

It is a happy number.

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 = 1321012196 and 1321012205.

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, 14358783 + ... + 14358874.

It is an arithmetic number, because the mean of its divisors is an integer number (258458922).

Almost surely, 2^1321012222 is an apocalyptic number.

1321012222 is a deficient number, since it is larger than the sum of its proper divisors (746659154).

1321012222 is a wasteful number, since it uses less digits than its factorization.

1321012222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28717682.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1321012222 is about 36345.7318264470. The cubic root of 1321012222 is about 1097.2416348980.

Adding to 1321012222 its reverse (2222101231), we get a palindrome (3543113453).

The spelling of 1321012222 in words is "one billion, three hundred twenty-one million, twelve thousand, two hundred twenty-two".