121206829 has 2 divisors, whose sum is σ = 121206830. Its totient is φ = 121206828.

The previous prime is 121206823. The next prime is 121206847. The reversal of 121206829 is 928602121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93644329 + 27562500 = 9677^2 + 5250^2 .

It is a cyclic number.

It is not a de Polignac number, because 121206829 - 2⁵ = 121206797 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121206829.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121206823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60603414 + 60603415.

It is an arithmetic number, because the mean of its divisors is an integer number (60603415).

Almost surely, 2^121206829 is an apocalyptic number.

It is an amenable number.

121206829 is a deficient number, since it is larger than the sum of its proper divisors (1).

121206829 is an equidigital number, since it uses as much as digits as its factorization.

121206829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 121206829 is about 11009.3973041216. The cubic root of 121206829 is about 494.8904005216.

The spelling of 121206829 in words is "one hundred twenty-one million, two hundred six thousand, eight hundred twenty-nine".