12405522101 has 4 divisors (see below), whose sum is σ = 14177739552. Its totient is φ = 10633304652.

The previous prime is 12405522091. The next prime is 12405522109. The reversal of 12405522101 is 10122550421.

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 a de Polignac number, because none of the positive numbers 2^k-12405522101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12405522109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 886108715 + ... + 886108728.

It is an arithmetic number, because the mean of its divisors is an integer number (3544434888).

Almost surely, 2^12405522101 is an apocalyptic number.

It is an amenable number.

12405522101 is a deficient number, since it is larger than the sum of its proper divisors (1772217451).

12405522101 is an equidigital number, since it uses as much as digits as its factorization.

12405522101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772217450.

The product of its (nonzero) digits is 800, while the sum is 23.

The spelling of 12405522101 in words is "twelve billion, four hundred five million, five hundred twenty-two thousand, one hundred one".