21423411041101 has 4 divisors (see below), whose sum is σ = 21430087083900. Its totient is φ = 21416734998304.

The previous prime is 21423411041099. The next prime is 21423411041147. The reversal of 21423411041101 is 10114011432412.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17071159739076 + 4352251302025 = 4131726^2 + 2086205^2 .

It is a cyclic number.

It is not a de Polignac number, because 21423411041101 - 2¹ = 21423411041099 is a prime.

It is a super-2 number, since 2×21423411041101² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21423411041161) 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, 3338016586 + ... + 3338023003.

It is an arithmetic number, because the mean of its divisors is an integer number (5357521770975).

Almost surely, 2^{21423411041101} is an apocalyptic number.

It is an amenable number.

21423411041101 is a deficient number, since it is larger than the sum of its proper divisors (6676042799).

21423411041101 is an equidigital number, since it uses as much as digits as its factorization.

21423411041101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6676042798.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 21423411041101 its reverse (10114011432412), we get a palindrome (31537422473513).

The spelling of 21423411041101 in words is "twenty-one trillion, four hundred twenty-three billion, four hundred eleven million, forty-one thousand, one hundred one".