21434220141 has 16 divisors (see below), whose sum is σ = 28625932800. Its totient is φ = 14266018368.

The previous prime is 21434220133. The next prime is 21434220173. The reversal of 21434220141 is 14102243412.

It is not a de Polignac number, because 21434220141 - 2³ = 21434220133 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21434220121) 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, 6892695 + ... + 6895803.

It is an arithmetic number, because the mean of its divisors is an integer number (1789120800).

Almost surely, 2^21434220141 is an apocalyptic number.

It is an amenable number.

21434220141 is a deficient number, since it is larger than the sum of its proper divisors (7191712659).

21434220141 is a wasteful number, since it uses less digits than its factorization.

21434220141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6148.

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

Adding to 21434220141 its reverse (14102243412), we get a palindrome (35536463553).

The spelling of 21434220141 in words is "twenty-one billion, four hundred thirty-four million, two hundred twenty thousand, one hundred forty-one".