121210122210999 has 4 divisors (see below), whose sum is σ = 161613496281336. Its totient is φ = 80806748140664.

The previous prime is 121210122210941. The next prime is 121210122211001. The reversal of 121210122210999 is 999012221012121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121210122210999 - 2¹¹ = 121210122208951 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121210122210999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121210122210899) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20201687035164 + ... + 20201687035169.

It is an arithmetic number, because the mean of its divisors is an integer number (40403374070334).

Almost surely, 2^{121210122210999} is an apocalyptic number.

121210122210999 is a deficient number, since it is larger than the sum of its proper divisors (40403374070337).

121210122210999 is an equidigital number, since it uses as much as digits as its factorization.

121210122210999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40403374070336.

The product of its (nonzero) digits is 23328, while the sum is 42.

The spelling of 121210122210999 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred twenty-two million, two hundred ten thousand, nine hundred ninety-nine".