1321414121 has 4 divisors (see below), whose sum is σ = 1321810644. Its totient is φ = 1321017600.

The previous prime is 1321414069. The next prime is 1321414139. The reversal of 1321414121 is 1214141231.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1099850896 + 221563225 = 33164^2 + 14885^2 .

It is a cyclic number.

It is not a de Polignac number, because 1321414121 - 2⁶ = 1321414057 is a prime.

It is a super-2 number, since 2×1321414121² = 3492270558356405282, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321414093 and 1321414102.

It is not an unprimeable number, because it can be changed into a prime (1321414321) 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, 193220 + ... + 199941.

It is an arithmetic number, because the mean of its divisors is an integer number (330452661).

Almost surely, 2^1321414121 is an apocalyptic number.

It is an amenable number.

1321414121 is a deficient number, since it is larger than the sum of its proper divisors (396523).

1321414121 is an equidigital number, since it uses as much as digits as its factorization.

1321414121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396522.

The product of its digits is 192, while the sum is 20.

The square root of 1321414121 is about 36351.2602395020. The cubic root of 1321414121 is about 1097.3528969528.

Adding to 1321414121 its reverse (1214141231), we get a palindrome (2535555352).

The spelling of 1321414121 in words is "one billion, three hundred twenty-one million, four hundred fourteen thousand, one hundred twenty-one".