121005201923 has 2 divisors, whose sum is σ = 121005201924. Its totient is φ = 121005201922.

The previous prime is 121005201907. The next prime is 121005201929. The reversal of 121005201923 is 329102500121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121005201923 - 2⁴ = 121005201907 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121005201892 and 121005201901.

It is not a weakly prime, because it can be changed into another prime (121005201929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60502600961 + 60502600962.

It is an arithmetic number, because the mean of its divisors is an integer number (60502600962).

Almost surely, 2^121005201923 is an apocalyptic number.

121005201923 is a deficient number, since it is larger than the sum of its proper divisors (1).

121005201923 is an equidigital number, since it uses as much as digits as its factorization.

121005201923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 26.

The spelling of 121005201923 in words is "one hundred twenty-one billion, five million, two hundred one thousand, nine hundred twenty-three".