21241110140 has 24 divisors (see below), whose sum is σ = 44623032720. Its totient is φ = 8493262848.

The previous prime is 21241110101. The next prime is 21241110199. The reversal of 21241110140 is 4101114212.

It is a super-2 number, since 2×21241110140² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143702 + ... + 251261.

It is an arithmetic number, because the mean of its divisors is an integer number (1859293030).

Almost surely, 2^21241110140 is an apocalyptic number.

21241110140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21241110140 is an abundant number, since it is smaller than the sum of its proper divisors (23381922580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21241110140 is a wasteful number, since it uses less digits than its factorization.

21241110140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 397661 (or 397659 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21241110140 its reverse (4101114212), we get a palindrome (25342224352).

The spelling of 21241110140 in words is "twenty-one billion, two hundred forty-one million, one hundred ten thousand, one hundred forty".