121003132110221 has 2 divisors, whose sum is σ = 121003132110222. Its totient is φ = 121003132110220.

The previous prime is 121003132110191. The next prime is 121003132110349. The reversal of 121003132110221 is 122011231300121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80344081272196 + 40659050838025 = 8963486^2 + 6376445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121003132110221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121003132110193 and 121003132110202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121083132110221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501566055110 + 60501566055111.

It is an arithmetic number, because the mean of its divisors is an integer number (60501566055111).

Almost surely, 2^{121003132110221} is an apocalyptic number.

It is an amenable number.

121003132110221 is a deficient number, since it is larger than the sum of its proper divisors (1).

121003132110221 is an equidigital number, since it uses as much as digits as its factorization.

121003132110221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 121003132110221 its reverse (122011231300121), we get a palindrome (243014363410342).

The spelling of 121003132110221 in words is "one hundred twenty-one trillion, three billion, one hundred thirty-two million, one hundred ten thousand, two hundred twenty-one".