121022717829 has 16 divisors (see below), whose sum is σ = 175463363712. Its totient is φ = 73752452928.

The previous prime is 121022717819. The next prime is 121022717861. The reversal of 121022717829 is 928717220121.

It is a happy number.

It is not a de Polignac number, because 121022717829 - 2⁹ = 121022717317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121022717819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15059802 + ... + 15067835.

It is an arithmetic number, because the mean of its divisors is an integer number (10966460232).

Almost surely, 2^121022717829 is an apocalyptic number.

It is an amenable number.

121022717829 is a deficient number, since it is larger than the sum of its proper divisors (54440645883).

121022717829 is a wasteful number, since it uses less digits than its factorization.

121022717829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30127756.

The product of its (nonzero) digits is 56448, while the sum is 42.

The spelling of 121022717829 in words is "one hundred twenty-one billion, twenty-two million, seven hundred seventeen thousand, eight hundred twenty-nine".