21035210350 has 96 divisors (see below), whose sum is σ = 48866372352. Its totient is φ = 6544800000.

The previous prime is 21035210323. The next prime is 21035210419. The reversal of 21035210350 is 5301253012.

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 47 ways as a sum of consecutive naturals, for example, 2309305 + ... + 2318395.

It is an arithmetic number, because the mean of its divisors is an integer number (509024712).

Almost surely, 2^21035210350 is an apocalyptic number.

21035210350 is an abundant number, since it is smaller than the sum of its proper divisors (27831162002).

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

21035210350 is a wasteful number, since it uses less digits than its factorization.

21035210350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9722 (or 9717 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 21035210350 its reverse (5301253012), we get a palindrome (26336463362).

The spelling of 21035210350 in words is "twenty-one billion, thirty-five million, two hundred ten thousand, three hundred fifty".