121396106 has 16 divisors (see below), whose sum is σ = 196967400. Its totient is φ = 55781568.

The previous prime is 121396091. The next prime is 121396193. The reversal of 121396106 is 601693121.

It can be written as a sum of positive squares in 4 ways, for example, as 121198081 + 198025 = 11009^2 + 445^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4241 + ... + 16148.

Almost surely, 2^121396106 is an apocalyptic number.

121396106 is a deficient number, since it is larger than the sum of its proper divisors (75571294).

121396106 is a wasteful number, since it uses less digits than its factorization.

121396106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20633.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 121396106 is about 11017.9901070930. The cubic root of 121396106 is about 495.1478740600.

The spelling of 121396106 in words is "one hundred twenty-one million, three hundred ninety-six thousand, one hundred six".