2021220203 has 4 divisors (see below), whose sum is σ = 2068225368. Its totient is φ = 1974215040.

The previous prime is 2021220193. The next prime is 2021220211. The reversal of 2021220203 is 3020221202.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2021220203 - 2⁶ = 2021220139 is a prime.

It is a super-2 number, since 2×2021220203² = 8170662218030722418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2021220283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23502518 + ... + 23502603.

It is an arithmetic number, because the mean of its divisors is an integer number (517056342).

Almost surely, 2^2021220203 is an apocalyptic number.

2021220203 is a deficient number, since it is larger than the sum of its proper divisors (47005165).

2021220203 is an equidigital number, since it uses as much as digits as its factorization.

2021220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47005164.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2021220203 is about 44957.9826393489. The cubic root of 2021220203 is about 1264.3613461358.

Adding to 2021220203 its reverse (3020221202), we get a palindrome (5041441405).

Subtracting 2021220203 from its reverse (3020221202), we obtain a palindrome (999000999).

The spelling of 2021220203 in words is "two billion, twenty-one million, two hundred twenty thousand, two hundred three".