121713226 has 4 divisors (see below), whose sum is σ = 182569842. Its totient is φ = 60856612.

The previous prime is 121713209. The next prime is 121713227. The reversal of 121713226 is 622317121.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 100100025 + 21613201 = 10005^2 + 4649^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121713226.

It is not an unprimeable number, because it can be changed into a prime (121713227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30428305 + ... + 30428308.

Almost surely, 2^121713226 is an apocalyptic number.

121713226 is a deficient number, since it is larger than the sum of its proper divisors (60856616).

121713226 is an equidigital number, since it uses as much as digits as its factorization.

121713226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60856615.

The product of its digits is 1008, while the sum is 25.

The square root of 121713226 is about 11032.3717305029. The cubic root of 121713226 is about 495.5786532930.

The spelling of 121713226 in words is "one hundred twenty-one million, seven hundred thirteen thousand, two hundred twenty-six".