21010242141 has 48 divisors (see below), whose sum is σ = 35332801920. Its totient is φ = 11781832320.

The previous prime is 21010242137. The next prime is 21010242173. The reversal of 21010242141 is 14124201012.

It is not a de Polignac number, because 21010242141 - 2² = 21010242137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21010242131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2273911 + ... + 2283131.

It is an arithmetic number, because the mean of its divisors is an integer number (736100040).

Almost surely, 2^21010242141 is an apocalyptic number.

21010242141 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21010242141 is a deficient number, since it is larger than the sum of its proper divisors (14322559779).

21010242141 is a wasteful number, since it uses less digits than its factorization.

21010242141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9906 (or 9903 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21010242141 its reverse (14124201012), we get a palindrome (35134443153).

The spelling of 21010242141 in words is "twenty-one billion, ten million, two hundred forty-two thousand, one hundred forty-one".