121210110001121 has 16 divisors (see below), whose sum is σ = 122742240779520. Its totient is φ = 119684930635200.

The previous prime is 121210110001087. The next prime is 121210110001151. The reversal of 121210110001121 is 121100011012121.

It is a cyclic number.

It is not a de Polignac number, because 121210110001121 - 2¹⁴ = 121210109984737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121210110001096 and 121210110001105.

It is not an unprimeable number, because it can be changed into a prime (121210110001151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53904740 + ... + 56108298.

It is an arithmetic number, because the mean of its divisors is an integer number (7671390048720).

Almost surely, 2^{121210110001121} is an apocalyptic number.

It is an amenable number.

121210110001121 is a deficient number, since it is larger than the sum of its proper divisors (1532130778399).

121210110001121 is a wasteful number, since it uses less digits than its factorization.

121210110001121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2205136.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121210110001121 its reverse (121100011012121), we get a palindrome (242310121013242).

It can be divided in two parts, 12121011000 and 1121, that added together give a palindrome (12121012121).

The spelling of 121210110001121 in words is "one hundred twenty-one trillion, two hundred ten billion, one hundred ten million, one thousand, one hundred twenty-one".