21404420301011 has 4 divisors (see below), whose sum is σ = 23350276692024. Its totient is φ = 19458563910000.

The previous prime is 21404420300957. The next prime is 21404420301013. The reversal of 21404420301011 is 11010302440412.

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

It is a cyclic number.

It is not a de Polignac number, because 21404420301011 - 2²⁶ = 21404353192147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21404420301013) 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, 972928195490 + ... + 972928195511.

It is an arithmetic number, because the mean of its divisors is an integer number (5837569173006).

Almost surely, 2^{21404420301011} is an apocalyptic number.

21404420301011 is a deficient number, since it is larger than the sum of its proper divisors (1945856391013).

21404420301011 is a wasteful number, since it uses less digits than its factorization.

21404420301011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1945856391012.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21404420301011 its reverse (11010302440412), we get a palindrome (32414722741423).

The spelling of 21404420301011 in words is "twenty-one trillion, four hundred four billion, four hundred twenty million, three hundred one thousand, eleven".