121615226 has 32 divisors (see below), whose sum is σ = 194365440. Its totient is φ = 56992896.

The previous prime is 121615213. The next prime is 121615243. The reversal of 121615226 is 622516121.

It is a junction number, because it is equal to n+sod(n) for n = 121615195 and 121615204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 253655 + ... + 254133.

It is an arithmetic number, because the mean of its divisors is an integer number (6073920).

Almost surely, 2^121615226 is an apocalyptic number.

121615226 is a deficient number, since it is larger than the sum of its proper divisors (72750214).

121615226 is a wasteful number, since it uses less digits than its factorization.

121615226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638.

The product of its digits is 1440, while the sum is 26.

The square root of 121615226 is about 11027.9293613987. The cubic root of 121615226 is about 495.4456090045.

The spelling of 121615226 in words is "one hundred twenty-one million, six hundred fifteen thousand, two hundred twenty-six".