121020102021061 has 2 divisors, whose sum is σ = 121020102021062. Its totient is φ = 121020102021060.

The previous prime is 121020102021043. The next prime is 121020102021167. The reversal of 121020102021061 is 160120201020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113332929890436 + 7687172130625 = 10645794^2 + 2772575^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020102021061 - 2³³ = 121011512086469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020102021361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510051010530 + 60510051010531.

It is an arithmetic number, because the mean of its divisors is an integer number (60510051010531).

Almost surely, 2^{121020102021061} is an apocalyptic number.

It is an amenable number.

121020102021061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020102021061 is an equidigital number, since it uses as much as digits as its factorization.

121020102021061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 121020102021061 its reverse (160120201020121), we get a palindrome (281140303041182).

The spelling of 121020102021061 in words is "one hundred twenty-one trillion, twenty billion, one hundred two million, twenty-one thousand, sixty-one".