121320003121213 has 4 divisors (see below), whose sum is σ = 130652311053628. Its totient is φ = 111987695188800.

The previous prime is 121320003121201. The next prime is 121320003121243. The reversal of 121320003121213 is 312121300023121.

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 21056369593284 + 100263633527929 = 4588722^2 + 10013173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121320003121213 is a prime.

It is a super-2 number, since 2×121320003121213² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121320003121243) 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, 4666153966188 + ... + 4666153966213.

It is an arithmetic number, because the mean of its divisors is an integer number (32663077763407).

Almost surely, 2^{121320003121213} is an apocalyptic number.

121320003121213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

121320003121213 is a deficient number, since it is larger than the sum of its proper divisors (9332307932415).

121320003121213 is an equidigital number, since it uses as much as digits as its factorization.

121320003121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9332307932414.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121320003121213 its reverse (312121300023121), we get a palindrome (433441303144334).

The spelling of 121320003121213 in words is "one hundred twenty-one trillion, three hundred twenty billion, three million, one hundred twenty-one thousand, two hundred thirteen".