1322121222 has 24 divisors (see below), whose sum is σ = 2942018976. Its totient is φ = 428795856.

The previous prime is 1322121179. The next prime is 1322121239. The reversal of 1322121222 is 2221212231.

1322121222 is a `hidden beast` number, since 1 + 322 + 121 + 222 = 666.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1322121195 and 1322121204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 991918 + ... + 993249.

It is an arithmetic number, because the mean of its divisors is an integer number (122584124).

Almost surely, 2^1322121222 is an apocalyptic number.

1322121222 is an abundant number, since it is smaller than the sum of its proper divisors (1619897754).

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

1322121222 is a wasteful number, since it uses less digits than its factorization.

1322121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985212 (or 1985209 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 1322121222 is about 36360.9848876512. The cubic root of 1322121222 is about 1097.5485966343.

Adding to 1322121222 its reverse (2221212231), we get a palindrome (3543333453).

It can be divided in two parts, 13221 and 21222, that added together give a palindrome (34443).

The spelling of 1322121222 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-two".