121032100121 has 2 divisors, whose sum is σ = 121032100122. Its totient is φ = 121032100120.

The previous prime is 121032100109. The next prime is 121032100159. The reversal of 121032100121 is 121001230121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 119795593225 + 1236506896 = 346115^2 + 35164^2 .

It is an emirp because it is prime and its reverse (121001230121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121032100121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121032100096 and 121032100105.

It is not a weakly prime, because it can be changed into another prime (121032100181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60516050060 + 60516050061.

It is an arithmetic number, because the mean of its divisors is an integer number (60516050061).

Almost surely, 2^121032100121 is an apocalyptic number.

It is an amenable number.

121032100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121032100121 is an equidigital number, since it uses as much as digits as its factorization.

121032100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 121032100121 its reverse (121001230121), we get a palindrome (242033330242).

The spelling of 121032100121 in words is "one hundred twenty-one billion, thirty-two million, one hundred thousand, one hundred twenty-one".