21040112301144 has 32 divisors (see below), whose sum is σ = 52607636835840. Its totient is φ = 7012389956000.

The previous prime is 21040112301139. The next prime is 21040112301163. The reversal of 21040112301144 is 44110321104012.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 61125492 + ... + 61468739.

It is an arithmetic number, because the mean of its divisors is an integer number (1643988651120).

Almost surely, 2^{21040112301144} is an apocalyptic number.

21040112301144 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21040112301144 is an abundant number, since it is smaller than the sum of its proper divisors (31567524534696).

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

21040112301144 is a wasteful number, since it uses less digits than its factorization.

21040112301144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122601391 (or 122601387 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 21040112301144 its reverse (44110321104012), we get a palindrome (65150433405156).

The spelling of 21040112301144 in words is "twenty-one trillion, forty billion, one hundred twelve million, three hundred one thousand, one hundred forty-four".