121010023102621 has 2 divisors, whose sum is σ = 121010023102622. Its totient is φ = 121010023102620.

The previous prime is 121010023102609. The next prime is 121010023102627. The reversal of 121010023102621 is 126201320010121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86412157922596 + 34597865180025 = 9295814^2 + 5881995^2 .

It is a cyclic number.

It is not a de Polignac number, because 121010023102621 - 2⁵ = 121010023102589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121010023102592 and 121010023102601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121010023102627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60505011551310 + 60505011551311.

It is an arithmetic number, because the mean of its divisors is an integer number (60505011551311).

Almost surely, 2^{121010023102621} is an apocalyptic number.

It is an amenable number.

121010023102621 is a deficient number, since it is larger than the sum of its proper divisors (1).

121010023102621 is an equidigital number, since it uses as much as digits as its factorization.

121010023102621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 121010023102621 its reverse (126201320010121), we get a palindrome (247211343112742).

The spelling of 121010023102621 in words is "one hundred twenty-one trillion, ten billion, twenty-three million, one hundred two thousand, six hundred twenty-one".