121201213 has 8 divisors (see below), whose sum is σ = 138654720. Its totient is φ = 103782480.

The previous prime is 121201193. The next prime is 121201217. The reversal of 121201213 is 312102121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121201193 and 121201202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733 + ... + 15586.

It is an arithmetic number, because the mean of its divisors is an integer number (17331840).

Almost surely, 2^121201213 is an apocalyptic number.

It is an amenable number.

121201213 is a deficient number, since it is larger than the sum of its proper divisors (17453507).

121201213 is a wasteful number, since it uses less digits than its factorization.

121201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17387.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121201213 is about 11009.1422463333. The cubic root of 121201213 is about 494.8827569825.

Adding to 121201213 its reverse (312102121), we get a palindrome (433303334).

The spelling of 121201213 in words is "one hundred twenty-one million, two hundred one thousand, two hundred thirteen".