2021120123203 has 2 divisors, whose sum is σ = 2021120123204. Its totient is φ = 2021120123202.

The previous prime is 2021120123177. The next prime is 2021120123299. The reversal of 2021120123203 is 3023210211202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021120123203 - 2¹³ = 2021120115011 is a prime.

It is a super-2 number, since 2×2021120123203² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2021120123003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560061601 + 1010560061602.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560061602).

Almost surely, 2^{2021120123203} is an apocalyptic number.

2021120123203 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021120123203 is an equidigital number, since it uses as much as digits as its factorization.

2021120123203 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 2021120123203 its reverse (3023210211202), we get a palindrome (5044330334405).

The spelling of 2021120123203 in words is "two trillion, twenty-one billion, one hundred twenty million, one hundred twenty-three thousand, two hundred three".