21202050 has 48 divisors (see below), whose sum is σ = 53112672. Its totient is φ = 5596800.

The previous prime is 21202039. The next prime is 21202079. The reversal of 21202050 is 5020212.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15390 + ... + 16710.

It is an arithmetic number, because the mean of its divisors is an integer number (1106514).

Almost surely, 2^21202050 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21202050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26556336).

21202050 is an abundant number, since it is smaller than the sum of its proper divisors (31910622).

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

21202050 is a wasteful number, since it uses less digits than its factorization.

21202050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1443 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 12.

The square root of 21202050 is about 4604.5683836816. The cubic root of 21202050 is about 276.7744213419.

Adding to 21202050 its reverse (5020212), we get a palindrome (26222262).

The spelling of 21202050 in words is "twenty-one million, two hundred two thousand, fifty".