20212203 has 12 divisors (see below), whose sum is σ = 29622824. Its totient is φ = 12249600.

The previous prime is 20212187. The next prime is 20212223. The reversal of 20212203 is 30221202.

It is not a de Polignac number, because 20212203 - 2⁴ = 20212187 is a prime.

It is a super-2 number, since 2×20212203² = 817066300226418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20212223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27478 + ... + 28203.

Almost surely, 2^20212203 is an apocalyptic number.

20212203 is a deficient number, since it is larger than the sum of its proper divisors (9410621).

20212203 is a wasteful number, since it uses less digits than its factorization.

20212203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55706 (or 55695 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 20212203 is about 4495.7983718134. The cubic root of 20212203 is about 272.3983988426.

Adding to 20212203 its reverse (30221202), we get a palindrome (50433405).

It can be divided in two parts, 2021 and 2203, that added together give a palindrome (4224).

The spelling of 20212203 in words is "twenty million, two hundred twelve thousand, two hundred three".