21422302143 has 32 divisors (see below), whose sum is σ = 33393295872. Its totient is φ = 12083068800.

The previous prime is 21422302129. The next prime is 21422302169. The reversal of 21422302143 is 34120322412.

It is a happy number.

It is not a de Polignac number, because 21422302143 - 2¹⁰ = 21422301119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21422302183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 353328 + ... + 409493.

It is an arithmetic number, because the mean of its divisors is an integer number (1043540496).

Almost surely, 2^21422302143 is an apocalyptic number.

21422302143 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

21422302143 is a deficient number, since it is larger than the sum of its proper divisors (11970993729).

21422302143 is a wasteful number, since it uses less digits than its factorization.

21422302143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762895.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 21422302143 its reverse (34120322412), we get a palindrome (55542624555).

The spelling of 21422302143 in words is "twenty-one billion, four hundred twenty-two million, three hundred two thousand, one hundred forty-three".