20110240340421 has 64 divisors (see below), whose sum is σ = 33637799854080. Its totient is φ = 10382016807360.

The previous prime is 20110240340401. The next prime is 20110240340423. The reversal of 20110240340421 is 12404304201102.

It is not a de Polignac number, because 20110240340421 - 2⁵ = 20110240340389 is a prime.

It is a super-2 number, since 2×20110240340421² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20110240340391 and 20110240340400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110240340423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 66296520 + ... + 66599166.

It is an arithmetic number, because the mean of its divisors is an integer number (525590622720).

Almost surely, 2^{20110240340421} is an apocalyptic number.

20110240340421 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20110240340421 is a deficient number, since it is larger than the sum of its proper divisors (13527559513659).

20110240340421 is a wasteful number, since it uses less digits than its factorization.

20110240340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304454.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 20110240340421 its reverse (12404304201102), we get a palindrome (32514544541523).

The spelling of 20110240340421 in words is "twenty trillion, one hundred ten billion, two hundred forty million, three hundred forty thousand, four hundred twenty-one".