21101410434423 has 32 divisors (see below), whose sum is σ = 32499395361792. Its totient is φ = 12036097203200.

The previous prime is 21101410434371. The next prime is 21101410434427. The reversal of 21101410434423 is 32443401410112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 21101410434423 - 2¹² = 21101410430327 is a prime.

It is a super-3 number, since 3×21101410434423³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101410434427) 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 31 ways as a sum of consecutive naturals, for example, 18926443 + ... + 20010323.

It is an arithmetic number, because the mean of its divisors is an integer number (1015606105056).

Almost surely, 2^{21101410434423} is an apocalyptic number.

21101410434423 is a deficient number, since it is larger than the sum of its proper divisors (11397984927369).

21101410434423 is a wasteful number, since it uses less digits than its factorization.

21101410434423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118615.

The product of its (nonzero) digits is 9216, while the sum is 30.

Adding to 21101410434423 its reverse (32443401410112), we get a palindrome (53544811844535).

The spelling of 21101410434423 in words is "twenty-one trillion, one hundred one billion, four hundred ten million, four hundred thirty-four thousand, four hundred twenty-three".