21200422141 has 4 divisors (see below), whose sum is σ = 21418983292. Its totient is φ = 20981860992.

The previous prime is 21200422081. The next prime is 21200422153. The reversal of 21200422141 is 14122400212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6793221241 + 14407200900 = 82421^2 + 120030^2 .

It is a cyclic number.

It is not a de Polignac number, because 21200422141 - 2⁷ = 21200422013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200422181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109280430 + ... + 109280623.

It is an arithmetic number, because the mean of its divisors is an integer number (5354745823).

Almost surely, 2^21200422141 is an apocalyptic number.

It is an amenable number.

21200422141 is a deficient number, since it is larger than the sum of its proper divisors (218561151).

21200422141 is an equidigital number, since it uses as much as digits as its factorization.

21200422141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218561150.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21200422141 its reverse (14122400212), we get a palindrome (35322822353).

The spelling of 21200422141 in words is "twenty-one billion, two hundred million, four hundred twenty-two thousand, one hundred forty-one".