21026202 has 16 divisors (see below), whose sum is σ = 42947712. Its totient is φ = 6859520.

The previous prime is 21026197. The next prime is 21026231. The reversal of 21026202 is 20262012.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36999 + ... + 37562.

It is an arithmetic number, because the mean of its divisors is an integer number (2684232).

Almost surely, 2^21026202 is an apocalyptic number.

21026202 is an abundant number, since it is smaller than the sum of its proper divisors (21921510).

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

21026202 is a wasteful number, since it uses less digits than its factorization.

21026202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74613.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 21026202 is about 4585.4336763277. The cubic root of 21026202 is about 276.0071149185.

Adding to 21026202 its reverse (20262012), we get a palindrome (41288214).

The spelling of 21026202 in words is "twenty-one million, twenty-six thousand, two hundred two".