12101004421 has 24 divisors (see below), whose sum is σ = 13900828032. Its totient is φ = 10506381600.

The previous prime is 12101004403. The next prime is 12101004451. The reversal of 12101004421 is 12440010121.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-12101004421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12101004395 and 12101004404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12101004451) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2020251 + ... + 2026231.

It is an arithmetic number, because the mean of its divisors is an integer number (579201168).

Almost surely, 2^12101004421 is an apocalyptic number.

12101004421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12101004421 is a deficient number, since it is larger than the sum of its proper divisors (1799823611).

12101004421 is a wasteful number, since it uses less digits than its factorization.

12101004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6753 (or 6742 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12101004421 its reverse (12440010121), we get a palindrome (24541014542).

The spelling of 12101004421 in words is "twelve billion, one hundred one million, four thousand, four hundred twenty-one".