21202202 has 32 divisors (see below), whose sum is σ = 38323200. Its totient is φ = 8784720.

The previous prime is 21202201. The next prime is 21202211. The reversal of 21202202 is 20220212.

It is not an unprimeable number, because it can be changed into a prime (21202201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20768 + ... + 21764.

It is an arithmetic number, because the mean of its divisors is an integer number (1197600).

Almost surely, 2^21202202 is an apocalyptic number.

21202202 is a deficient number, since it is larger than the sum of its proper divisors (17120998).

21202202 is an equidigital number, since it uses as much as digits as its factorization.

21202202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051 (or 1037 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 21202202 is about 4604.5848889992. The cubic root of 21202202 is about 276.7750827499.

Adding to 21202202 its reverse (20220212), we get a palindrome (41422414).

The spelling of 21202202 in words is "twenty-one million, two hundred two thousand, two hundred two".