121020201002101 has 2 divisors, whose sum is σ = 121020201002102. Its totient is φ = 121020201002100.

The previous prime is 121020201002047. The next prime is 121020201002119. The reversal of 121020201002101 is 101200102020121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80318340202500 + 40701860799601 = 8962050^2 + 6379801^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020201002101 - 2²³ = 121020192613493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020204002101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510100501050 + 60510100501051.

It is an arithmetic number, because the mean of its divisors is an integer number (60510100501051).

Almost surely, 2^{121020201002101} is an apocalyptic number.

It is an amenable number.

121020201002101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020201002101 is an equidigital number, since it uses as much as digits as its factorization.

121020201002101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121020201002101 its reverse (101200102020121), we get a palindrome (222220303022222).

The spelling of 121020201002101 in words is "one hundred twenty-one trillion, twenty billion, two hundred one million, two thousand, one hundred one".