121132113121 has 2 divisors, whose sum is σ = 121132113122. Its totient is φ = 121132113120.

The previous prime is 121132113107. The next prime is 121132113169. The reversal of 121132113121 is 121311231121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107132490721 + 13999622400 = 327311^2 + 118320^2 .

It is a cyclic number.

It is not a de Polignac number, because 121132113121 - 2⁹ = 121132112609 is a prime.

It is not a weakly prime, because it can be changed into another prime (121132116121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60566056560 + 60566056561.

It is an arithmetic number, because the mean of its divisors is an integer number (60566056561).

Almost surely, 2^121132113121 is an apocalyptic number.

It is an amenable number.

121132113121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121132113121 is an equidigital number, since it uses as much as digits as its factorization.

121132113121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72, while the sum is 19.

Adding to 121132113121 its reverse (121311231121), we get a palindrome (242443344242).

The spelling of 121132113121 in words is "one hundred twenty-one billion, one hundred thirty-two million, one hundred thirteen thousand, one hundred twenty-one".