10091209123 has 2 divisors, whose sum is σ = 10091209124. Its totient is φ = 10091209122.

The previous prime is 10091209109. The next prime is 10091209127. The reversal of 10091209123 is 32190219001.

It is a strong prime.

It is an emirp because it is prime and its reverse (32190219001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10091209123 - 2²¹ = 10089111971 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10091209091 and 10091209100.

It is not a weakly prime, because it can be changed into another prime (10091209127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5045604561 + 5045604562.

It is an arithmetic number, because the mean of its divisors is an integer number (5045604562).

Almost surely, 2^10091209123 is an apocalyptic number.

10091209123 is a deficient number, since it is larger than the sum of its proper divisors (1).

10091209123 is an equidigital number, since it uses as much as digits as its factorization.

10091209123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 28.

The spelling of 10091209123 in words is "ten billion, ninety-one million, two hundred nine thousand, one hundred twenty-three".