21203302141 has 4 divisors (see below), whose sum is σ = 24232345312. Its totient is φ = 18174258972.

The previous prime is 21203302129. The next prime is 21203302163. The reversal of 21203302141 is 14120330212.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21203302141 - 2¹¹ = 21203300093 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203302171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1514521575 + ... + 1514521588.

It is an arithmetic number, because the mean of its divisors is an integer number (6058086328).

Almost surely, 2^21203302141 is an apocalyptic number.

It is an amenable number.

21203302141 is a deficient number, since it is larger than the sum of its proper divisors (3029043171).

21203302141 is an equidigital number, since it uses as much as digits as its factorization.

21203302141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3029043170.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21203302141 its reverse (14120330212), we get a palindrome (35323632353).

The spelling of 21203302141 in words is "twenty-one billion, two hundred three million, three hundred two thousand, one hundred forty-one".