121210232211 has 12 divisors (see below), whose sum is σ = 176687699760. Its totient is φ = 80065473840.

The previous prime is 121210232173. The next prime is 121210232243. The reversal of 121210232211 is 112232012121.

121210232211 is a `hidden beast` number, since 1 + 212 + 10 + 232 + 211 = 666.

It is not a de Polignac number, because 121210232211 - 2⁹ = 121210231699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121210231211) 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, 61777935 + ... + 61779896.

It is an arithmetic number, because the mean of its divisors is an integer number (14723974980).

Almost surely, 2^121210232211 is an apocalyptic number.

121210232211 is a deficient number, since it is larger than the sum of its proper divisors (55477467549).

121210232211 is a wasteful number, since it uses less digits than its factorization.

121210232211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123557946 (or 123557943 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 121210232211 its reverse (112232012121), we get a palindrome (233442244332).

The spelling of 121210232211 in words is "one hundred twenty-one billion, two hundred ten million, two hundred thirty-two thousand, two hundred eleven".