121222310121 has 24 divisors (see below), whose sum is σ = 191040975840. Its totient is φ = 73458835200.

The previous prime is 121222310107. The next prime is 121222310149. The reversal of 121222310121 is 121013222121.

121222310121 is a `hidden beast` number, since 1 + 212 + 22 + 310 + 121 = 666.

It is not a de Polignac number, because 121222310121 - 2⁹ = 121222309609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121222310094 and 121222310103.

It is not an unprimeable number, because it can be changed into a prime (121222310921) 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 23 ways as a sum of consecutive naturals, for example, 760761 + ... + 906201.

It is an arithmetic number, because the mean of its divisors is an integer number (7960040660).

Almost surely, 2^121222310121 is an apocalyptic number.

121222310121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121222310121 is a deficient number, since it is larger than the sum of its proper divisors (69818665719).

121222310121 is a wasteful number, since it uses less digits than its factorization.

121222310121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153877 (or 153874 counting only the distinct ones).

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

Adding to 121222310121 its reverse (121013222121), we get a palindrome (242235532242).

The spelling of 121222310121 in words is "one hundred twenty-one billion, two hundred twenty-two million, three hundred ten thousand, one hundred twenty-one".