121430213 has 4 divisors (see below), whose sum is σ = 121492608. Its totient is φ = 121367820.

The previous prime is 121430207. The next prime is 121430249. The reversal of 121430213 is 312034121.

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 121430213 - 2¹⁴ = 121413829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121430191 and 121430200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121430713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28181 + ... + 32202.

It is an arithmetic number, because the mean of its divisors is an integer number (30373152).

Almost surely, 2^121430213 is an apocalyptic number.

It is an amenable number.

121430213 is a deficient number, since it is larger than the sum of its proper divisors (62395).

121430213 is an equidigital number, since it uses as much as digits as its factorization.

121430213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62394.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 121430213 is about 11019.5377852249. The cubic root of 121430213 is about 495.1942413550.

Adding to 121430213 its reverse (312034121), we get a palindrome (433464334).

The spelling of 121430213 in words is "one hundred twenty-one million, four hundred thirty thousand, two hundred thirteen".