21035233350 has 72 divisors (see below), whose sum is σ = 56660413680. Its totient is φ = 5594928960.

The previous prime is 21035233321. The next prime is 21035233391. The reversal of 21035233350 is 5333253012.

21035233350 is a `hidden beast` number, since 2 + 103 + 523 + 3 + 35 + 0 = 666.

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, 114967 + ... + 235133.

It is an arithmetic number, because the mean of its divisors is an integer number (786950190).

Almost surely, 2^21035233350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21035233350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28330206840).

21035233350 is an abundant number, since it is smaller than the sum of its proper divisors (35625180330).

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

21035233350 is a wasteful number, since it uses less digits than its factorization.

21035233350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120574 (or 120566 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 27.

Adding to 21035233350 its reverse (5333253012), we get a palindrome (26368486362).

The spelling of 21035233350 in words is "twenty-one billion, thirty-five million, two hundred thirty-three thousand, three hundred fifty".