21010502241432 has 144 divisors (see below), whose sum is σ = 62606986260000. Its totient is φ = 6360688287360.

The previous prime is 21010502241403. The next prime is 21010502241473. The reversal of 21010502241432 is 23414220501012.

21010502241432 is a `hidden beast` number, since 2 + 1 + 0 + 1 + 0 + 5 + 0 + 224 + 1 + 432 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 21010502241396 and 21010502241405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7891194 + ... + 10212342.

Almost surely, 2^{21010502241432} is an apocalyptic number.

21010502241432 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21010502241432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31303493130000).

21010502241432 is an abundant number, since it is smaller than the sum of its proper divisors (41596484018568).

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

21010502241432 is a wasteful number, since it uses less digits than its factorization.

21010502241432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2322222 (or 2322204 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21010502241432 its reverse (23414220501012), we get a palindrome (44424722742444).

The spelling of 21010502241432 in words is "twenty-one trillion, ten billion, five hundred two million, two hundred forty-one thousand, four hundred thirty-two".