21122202 has 16 divisors (see below), whose sum is σ = 43227360. Its totient is φ = 6876912.

The previous prime is 21122201. The next prime is 21122203. The reversal of 21122202 is 20222112.

It is an interprime number because it is at equal distance from previous prime (21122201) and next prime (21122203).

It is a super-2 number, since 2×21122202² = 892294834657608, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21122201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40677 + ... + 41192.

It is an arithmetic number, because the mean of its divisors is an integer number (2701710).

Almost surely, 2^21122202 is an apocalyptic number.

21122202 is an abundant number, since it is smaller than the sum of its proper divisors (22105158).

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

21122202 is a wasteful number, since it uses less digits than its factorization.

21122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81917.

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 21122202 is about 4595.8896853602. The cubic root of 21122202 is about 276.4265354019.

Adding to 21122202 its reverse (20222112), we get a palindrome (41344314).

The spelling of 21122202 in words is "twenty-one million, one hundred twenty-two thousand, two hundred two".