20123001131109 has 4 divisors (see below), whose sum is σ = 26830668174816. Its totient is φ = 13415334087404.

The previous prime is 20123001131089. The next prime is 20123001131159. The reversal of 20123001131109 is 90113110032102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20123001131109 - 2¹¹ = 20123001129061 is a prime.

It is a super-2 number, since 2×20123001131109² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20123001131159) 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 in 3 ways as a sum of consecutive naturals, for example, 3353833521849 + ... + 3353833521854.

It is an arithmetic number, because the mean of its divisors is an integer number (6707667043704).

Almost surely, 2^{20123001131109} is an apocalyptic number.

It is an amenable number.

20123001131109 is a deficient number, since it is larger than the sum of its proper divisors (6707667043707).

20123001131109 is an equidigital number, since it uses as much as digits as its factorization.

20123001131109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6707667043706.

The product of its (nonzero) digits is 324, while the sum is 24.

The spelling of 20123001131109 in words is "twenty trillion, one hundred twenty-three billion, one million, one hundred thirty-one thousand, one hundred nine".