20212123203 has 12 divisors (see below), whose sum is σ = 29235903840. Its totient is φ = 13456003536.

The previous prime is 20212123201. The next prime is 20212123213. The reversal of 20212123203 is 30232121202.

It is not a de Polignac number, because 20212123203 - 2¹ = 20212123201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212123201) 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, 1555276 + ... + 1568217.

It is an arithmetic number, because the mean of its divisors is an integer number (2436325320).

Almost surely, 2^20212123203 is an apocalyptic number.

20212123203 is a deficient number, since it is larger than the sum of its proper divisors (9023780637).

20212123203 is a wasteful number, since it uses less digits than its factorization.

20212123203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124218 (or 3124215 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20212123203 its reverse (30232121202), we get a palindrome (50444244405).

The spelling of 20212123203 in words is "twenty billion, two hundred twelve million, one hundred twenty-three thousand, two hundred three".