121101319021 has 2 divisors, whose sum is σ = 121101319022. Its totient is φ = 121101319020.

The previous prime is 121101319019. The next prime is 121101319039. The reversal of 121101319021 is 120913101121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121024668996 + 76650025 = 347886^2 + 8755^2 .

It is an emirp because it is prime and its reverse (120913101121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121101319021 - 2¹ = 121101319019 is a prime.

Together with 121101319019, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 121101318983 and 121101319001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121101319621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60550659510 + 60550659511.

It is an arithmetic number, because the mean of its divisors is an integer number (60550659511).

Almost surely, 2^121101319021 is an apocalyptic number.

It is an amenable number.

121101319021 is a deficient number, since it is larger than the sum of its proper divisors (1).

121101319021 is an equidigital number, since it uses as much as digits as its factorization.

121101319021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

The spelling of 121101319021 in words is "one hundred twenty-one billion, one hundred one million, three hundred nineteen thousand, twenty-one".