10101121409 has 2 divisors, whose sum is σ = 10101121410. Its totient is φ = 10101121408.

The previous prime is 10101121379. The next prime is 10101121453. The reversal of 10101121409 is 90412110101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8811952384 + 1289169025 = 93872^2 + 35905^2 .

It is a cyclic number.

It is not a de Polignac number, because 10101121409 - 2⁸ = 10101121153 is a prime.

It is not a weakly prime, because it can be changed into another prime (10101111409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5050560704 + 5050560705.

It is an arithmetic number, because the mean of its divisors is an integer number (5050560705).

Almost surely, 2^10101121409 is an apocalyptic number.

It is an amenable number.

10101121409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10101121409 is an equidigital number, since it uses as much as digits as its factorization.

10101121409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 10101121409 in words is "ten billion, one hundred one million, one hundred twenty-one thousand, four hundred nine".