1331212222 has 8 divisors (see below), whose sum is σ = 2012541696. Its totient is φ = 660364992.

The previous prime is 1331212187. The next prime is 1331212241. The reversal of 1331212222 is 2222121331.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1331212222.

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, 2620243 + ... + 2620750.

It is an arithmetic number, because the mean of its divisors is an integer number (251567712).

Almost surely, 2^1331212222 is an apocalyptic number.

1331212222 is a deficient number, since it is larger than the sum of its proper divisors (681329474).

1331212222 is a wasteful number, since it uses less digits than its factorization.

1331212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5241122.

The product of its digits is 288, while the sum is 19.

The square root of 1331212222 is about 36485.7810934616. The cubic root of 1331212222 is about 1100.0584602539.

Adding to 1331212222 its reverse (2222121331), we get a palindrome (3553333553).

The spelling of 1331212222 in words is "one billion, three hundred thirty-one million, two hundred twelve thousand, two hundred twenty-two".