21035235000 has 160 divisors (see below), whose sum is σ = 70769658960. Its totient is φ = 5177856000.

The previous prime is 21035234993. The next prime is 21035235017. The reversal of 21035235000 is 53253012.

It is a super-2 number, since 2×21035235000² (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 39 ways as a sum of consecutive naturals, for example, 141064 + ... + 248936.

Almost surely, 2^21035235000 is an apocalyptic number.

21035235000 is a gapful number since it is divisible by the number (20) 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 21035235000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35384829480).

21035235000 is an abundant number, since it is smaller than the sum of its proper divisors (49734423960).

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

21035235000 is a wasteful number, since it uses less digits than its factorization.

21035235000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107915 (or 107896 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

Adding to 21035235000 its reverse (53253012), we get a palindrome (21088488012).

The spelling of 21035235000 in words is "twenty-one billion, thirty-five million, two hundred thirty-five thousand".