21100441301 has 4 divisors (see below), whose sum is σ = 21261513504. Its totient is φ = 20939369100.

The previous prime is 21100441277. The next prime is 21100441303. The reversal of 21100441301 is 10314400112.

It is a happy number.

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 21100441301 - 2⁶ = 21100441237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21100441301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21100441303) 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, 80535905 + ... + 80536166.

It is an arithmetic number, because the mean of its divisors is an integer number (5315378376).

Almost surely, 2^21100441301 is an apocalyptic number.

It is an amenable number.

21100441301 is a deficient number, since it is larger than the sum of its proper divisors (161072203).

21100441301 is a wasteful number, since it uses less digits than its factorization.

21100441301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161072202.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21100441301 its reverse (10314400112), we get a palindrome (31414841413).

The spelling of 21100441301 in words is "twenty-one billion, one hundred million, four hundred forty-one thousand, three hundred one".