121020023101 has 2 divisors, whose sum is σ = 121020023102. Its totient is φ = 121020023100.

The previous prime is 121020023087. The next prime is 121020023167. The reversal of 121020023101 is 101320020121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120884859225 + 135163876 = 347685^2 + 11626^2 .

It is a cyclic number.

It is not a de Polignac number, because 121020023101 - 2⁹ = 121020022589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020023191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60510011550 + 60510011551.

It is an arithmetic number, because the mean of its divisors is an integer number (60510011551).

Almost surely, 2^121020023101 is an apocalyptic number.

It is an amenable number.

121020023101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121020023101 is an equidigital number, since it uses as much as digits as its factorization.

121020023101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121020023101 its reverse (101320020121), we get a palindrome (222340043222).

The spelling of 121020023101 in words is "one hundred twenty-one billion, twenty million, twenty-three thousand, one hundred one".