20012220203 has 4 divisors (see below), whose sum is σ = 20040769008. Its totient is φ = 19983671400.

The previous prime is 20012220169. The next prime is 20012220251. The reversal of 20012220203 is 30202221002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30202221002 = 2 ⋅15101110501.

It is a cyclic number.

It is not a de Polignac number, because 20012220203 - 2⁸ = 20012219947 is a prime.

It is a super-2 number, since 2×20012220203² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20012220103) 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, 14273351 + ... + 14274752.

It is an arithmetic number, because the mean of its divisors is an integer number (5010192252).

Almost surely, 2^20012220203 is an apocalyptic number.

20012220203 is a deficient number, since it is larger than the sum of its proper divisors (28548805).

20012220203 is an equidigital number, since it uses as much as digits as its factorization.

20012220203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28548804.

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

Adding to 20012220203 its reverse (30202221002), we get a palindrome (50214441205).

The spelling of 20012220203 in words is "twenty billion, twelve million, two hundred twenty thousand, two hundred three".