1322121211 has 4 divisors (see below), whose sum is σ = 1334477592. Its totient is φ = 1309764832.

The previous prime is 1322121179. The next prime is 1322121239. The reversal of 1322121211 is 1121212231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1121212231 = 251 ⋅4466981.

It is a cyclic number.

It is not a de Polignac number, because 1322121211 - 2⁵ = 1322121179 is a prime.

It is a super-2 number, since 2×1322121211² = 3496008993152213042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1322127211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6178030 + ... + 6178243.

It is an arithmetic number, because the mean of its divisors is an integer number (333619398).

Almost surely, 2^1322121211 is an apocalyptic number.

1322121211 is a deficient number, since it is larger than the sum of its proper divisors (12356381).

1322121211 is a wasteful number, since it uses less digits than its factorization.

1322121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12356380.

The product of its digits is 48, while the sum is 16.

The square root of 1322121211 is about 36360.9847363902. The cubic root of 1322121211 is about 1097.5485935904.

Adding to 1322121211 its reverse (1121212231), we get a palindrome (2443333442).

The spelling of 1322121211 in words is "one billion, three hundred twenty-two million, one hundred twenty-one thousand, two hundred eleven".