21114201423 has 16 divisors (see below), whose sum is σ = 32179769856. Its totient is φ = 12063102240.

The previous prime is 21114201403. The next prime is 21114201481. The reversal of 21114201423 is 32410241112.

It is not a de Polignac number, because 21114201423 - 2⁶ = 21114201359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 21114201423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114201403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34513 + ... + 208373.

It is an arithmetic number, because the mean of its divisors is an integer number (2011235616).

Almost surely, 2^21114201423 is an apocalyptic number.

21114201423 is a deficient number, since it is larger than the sum of its proper divisors (11065568433).

21114201423 is a wasteful number, since it uses less digits than its factorization.

21114201423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179654.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21114201423 its reverse (32410241112), we get a palindrome (53524442535).

The spelling of 21114201423 in words is "twenty-one billion, one hundred fourteen million, two hundred one thousand, four hundred twenty-three".