203220220002123 has 4 divisors (see below), whose sum is σ = 270960293336168. Its totient is φ = 135480146668080.

The previous prime is 203220220002109. The next prime is 203220220002127. The reversal of 203220220002123 is 321200022022302.

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

It is not a de Polignac number, because 203220220002123 - 2¹² = 203220219998027 is a prime.

It is a super-2 number, since 2×203220220002123² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203220220002123.

It is not an unprimeable number, because it can be changed into a prime (203220220002127) 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, 33870036667018 + ... + 33870036667023.

It is an arithmetic number, because the mean of its divisors is an integer number (67740073334042).

Almost surely, 2^{203220220002123} is an apocalyptic number.

203220220002123 is a deficient number, since it is larger than the sum of its proper divisors (67740073334045).

203220220002123 is an equidigital number, since it uses as much as digits as its factorization.

203220220002123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67740073334044.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 203220220002123 its reverse (321200022022302), we get a palindrome (524420242024425).

The spelling of 203220220002123 in words is "two hundred three trillion, two hundred twenty billion, two hundred twenty million, two thousand, one hundred twenty-three".