121100101019 has 2 divisors, whose sum is σ = 121100101020. Its totient is φ = 121100101018.

The previous prime is 121100100997. The next prime is 121100101021. The reversal of 121100101019 is 910101001121.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121100101019 - 2²⁰ = 121099052443 is a prime.

It is a super-2 number, since 2×121100101019² (a number of 23 digits) contains 22 as substring.

Together with 121100101021, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 121100100988 and 121100101006.

It is not a weakly prime, because it can be changed into another prime (121100101079) 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, 60550050509 + 60550050510.

It is an arithmetic number, because the mean of its divisors is an integer number (60550050510).

Almost surely, 2^121100101019 is an apocalyptic number.

121100101019 is a deficient number, since it is larger than the sum of its proper divisors (1).

121100101019 is an equidigital number, since it uses as much as digits as its factorization.

121100101019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18, while the sum is 17.

The spelling of 121100101019 in words is "one hundred twenty-one billion, one hundred million, one hundred one thousand, nineteen".