1213320222 has 40 divisors (see below), whose sum is σ = 2806448832. Its totient is φ = 391392000.

The previous prime is 1213320193. The next prime is 1213320233. The reversal of 1213320222 is 2220233121.

1213320222 is a `hidden beast` number, since 121 + 3 + 320 + 222 = 666.

It is a super-2 number, since 2×1213320222² = 2944291922228258568, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1213320195 and 1213320204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 115779 + ... + 125822.

Almost surely, 2^1213320222 is an apocalyptic number.

1213320222 is an abundant number, since it is smaller than the sum of its proper divisors (1593128610).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1213320222 is a wasteful number, since it uses less digits than its factorization.

1213320222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241646 (or 241637 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 1213320222 is about 34832.7464033487. The cubic root of 1213320222 is about 1066.5760121958.

Adding to 1213320222 its reverse (2220233121), we get a palindrome (3433553343).

The spelling of 1213320222 in words is "one billion, two hundred thirteen million, three hundred twenty thousand, two hundred twenty-two".