21036202 has 32 divisors (see below), whose sum is σ = 36235584. Its totient is φ = 9072000.

The previous prime is 21036187. The next prime is 21036203. The reversal of 21036202 is 20263012.

It is not an unprimeable number, because it can be changed into a prime (21036203) 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, 34702 + ... + 35302.

It is an arithmetic number, because the mean of its divisors is an integer number (1132362).

Almost surely, 2^21036202 is an apocalyptic number.

21036202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21036202 is a deficient number, since it is larger than the sum of its proper divisors (15199382).

21036202 is a wasteful number, since it uses less digits than its factorization.

21036202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 694.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 21036202 is about 4586.5239561132. The cubic root of 21036202 is about 276.0508640416.

Adding to 21036202 its reverse (20263012), we get a palindrome (41299214).

The spelling of 21036202 in words is "twenty-one million, thirty-six thousand, two hundred two".