1322012121 has 4 divisors (see below), whose sum is σ = 1762682832. Its totient is φ = 881341412.

The previous prime is 1322012093. The next prime is 1322012137. The reversal of 1322012121 is 1212102231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1322012121 - 2⁶ = 1322012057 is a prime.

It is a super-3 number, since 3×1322012121³ (a number of 28 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1322012121.

It is not an unprimeable number, because it can be changed into a prime (1322012161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 220335351 + ... + 220335356.

It is an arithmetic number, because the mean of its divisors is an integer number (440670708).

Almost surely, 2^1322012121 is an apocalyptic number.

It is an amenable number.

1322012121 is a deficient number, since it is larger than the sum of its proper divisors (440670711).

1322012121 is an equidigital number, since it uses as much as digits as its factorization.

1322012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440670710.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1322012121 is about 36359.4846085585. The cubic root of 1322012121 is about 1097.5184060231.

Adding to 1322012121 its reverse (1212102231), we get a palindrome (2534114352).

The spelling of 1322012121 in words is "one billion, three hundred twenty-two million, twelve thousand, one hundred twenty-one".