21141124423 has 2 divisors, whose sum is σ = 21141124424. Its totient is φ = 21141124422.

The previous prime is 21141124397. The next prime is 21141124483. The reversal of 21141124423 is 32442114112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21141124423 - 2²⁵ = 21107569991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21141124483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10570562211 + 10570562212.

It is an arithmetic number, because the mean of its divisors is an integer number (10570562212).

Almost surely, 2^21141124423 is an apocalyptic number.

21141124423 is a deficient number, since it is larger than the sum of its proper divisors (1).

21141124423 is an equidigital number, since it uses as much as digits as its factorization.

21141124423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1536, while the sum is 25.

Adding to 21141124423 its reverse (32442114112), we get a palindrome (53583238535).

The spelling of 21141124423 in words is "twenty-one billion, one hundred forty-one million, one hundred twenty-four thousand, four hundred twenty-three".