21142133341 has 12 divisors (see below), whose sum is σ = 24599439612. Its totient is φ = 18117754368.

The previous prime is 21142133303. The next prime is 21142133371. The reversal of 21142133341 is 14333124112.

It can be written as a sum of positive squares in 2 ways, for example, as 9634207716 + 11507925625 = 98154^2 + 107275^2 .

It is not a de Polignac number, because 21142133341 - 2⁹ = 21142132829 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 (21142133371) 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 11 ways as a sum of consecutive naturals, for example, 182811 + ... + 275143.

It is an arithmetic number, because the mean of its divisors is an integer number (2049953301).

Almost surely, 2^21142133341 is an apocalyptic number.

It is an amenable number.

21142133341 is a deficient number, since it is larger than the sum of its proper divisors (3457306271).

21142133341 is an equidigital number, since it uses as much as digits as its factorization.

21142133341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97020 (or 97013 counting only the distinct ones).

The product of its digits is 1728, while the sum is 25.

Adding to 21142133341 its reverse (14333124112), we get a palindrome (35475257453).

The spelling of 21142133341 in words is "twenty-one billion, one hundred forty-two million, one hundred thirty-three thousand, three hundred forty-one".