21104220133001 has 4 divisors (see below), whose sum is σ = 21104230329600. Its totient is φ = 21104209936404.

The previous prime is 21104220132973. The next prime is 21104220133043. The reversal of 21104220133001 is 10033102240112.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 21104220133001 - 2³⁸ = 20829342226057 is a prime.

It is a super-2 number, since 2×21104220133001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21104220133081) 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, 767321 + ... + 6541958.

It is an arithmetic number, because the mean of its divisors is an integer number (5276057582400).

Almost surely, 2^{21104220133001} is an apocalyptic number.

It is an amenable number.

21104220133001 is a deficient number, since it is larger than the sum of its proper divisors (10196599).

21104220133001 is an equidigital number, since it uses as much as digits as its factorization.

21104220133001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10196598.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 21104220133001 its reverse (10033102240112), we get a palindrome (31137322373113).

The spelling of 21104220133001 in words is "twenty-one trillion, one hundred four billion, two hundred twenty million, one hundred thirty-three thousand, one".