21341121142 has 48 divisors (see below), whose sum is σ = 35654320800. Its totient is φ = 9571971200.

The previous prime is 21341121121. The next prime is 21341121161. The reversal of 21341121142 is 24112114312.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18069792 + ... + 18070972.

It is an arithmetic number, because the mean of its divisors is an integer number (742798350).

Almost surely, 2^21341121142 is an apocalyptic number.

21341121142 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21341121142 is a deficient number, since it is larger than the sum of its proper divisors (14313199658).

21341121142 is a wasteful number, since it uses less digits than its factorization.

21341121142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133 (or 2122 counting only the distinct ones).

The product of its digits is 384, while the sum is 22.

Adding to 21341121142 its reverse (24112114312), we get a palindrome (45453235454).

The spelling of 21341121142 in words is "twenty-one billion, three hundred forty-one million, one hundred twenty-one thousand, one hundred forty-two".