121302213 has 16 divisors (see below), whose sum is σ = 173465280. Its totient is φ = 75164544.

The previous prime is 121302197. The next prime is 121302229. The reversal of 121302213 is 312203121.

It is an interprime number because it is at equal distance from previous prime (121302197) and next prime (121302229).

It is not a de Polignac number, because 121302213 - 2⁴ = 121302197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121302192 and 121302201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121302263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17056 + ... + 23097.

It is an arithmetic number, because the mean of its divisors is an integer number (10841580).

Almost surely, 2^121302213 is an apocalyptic number.

It is an amenable number.

121302213 is a deficient number, since it is larger than the sum of its proper divisors (52163067).

121302213 is a wasteful number, since it uses less digits than its factorization.

121302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40228.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 121302213 is about 11013.7283877895. The cubic root of 121302213 is about 495.0201848722.

Adding to 121302213 its reverse (312203121), we get a palindrome (433505334).

The spelling of 121302213 in words is "one hundred twenty-one million, three hundred two thousand, two hundred thirteen".