121212110975 has 12 divisors (see below), whose sum is σ = 159144372144. Its totient is φ = 91265589120.

The previous prime is 121212110947. The next prime is 121212110977. The reversal of 121212110975 is 579011212121.

It is not a de Polignac number, because 121212110975 - 2⁶ = 121212110911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121212110977) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 142602059 + ... + 142602908.

It is an arithmetic number, because the mean of its divisors is an integer number (13262031012).

Almost surely, 2^121212110975 is an apocalyptic number.

121212110975 is a deficient number, since it is larger than the sum of its proper divisors (37932261169).

121212110975 is a wasteful number, since it uses less digits than its factorization.

121212110975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285204994 (or 285204989 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 32.

The spelling of 121212110975 in words is "one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, nine hundred seventy-five".