21100023301 has 4 divisors (see below), whose sum is σ = 24114312352. Its totient is φ = 18085734252.

The previous prime is 21100023293. The next prime is 21100023311. The reversal of 21100023301 is 10332000112.

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 21100023301 - 2³ = 21100023293 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 (21100023311) 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, 1507144515 + ... + 1507144528.

It is an arithmetic number, because the mean of its divisors is an integer number (6028578088).

Almost surely, 2^21100023301 is an apocalyptic number.

It is an amenable number.

21100023301 is a deficient number, since it is larger than the sum of its proper divisors (3014289051).

21100023301 is an equidigital number, since it uses as much as digits as its factorization.

21100023301 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014289050.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 21100023301 its reverse (10332000112), we get a palindrome (31432023413).

The spelling of 21100023301 in words is "twenty-one billion, one hundred million, twenty-three thousand, three hundred one".