2001122122203 has 96 divisors (see below), whose sum is σ = 3114710651520. Its totient is φ = 1235258449920.

The previous prime is 2001122122193. The next prime is 2001122122231. The reversal of 2001122122203 is 3022212211002.

It is not a de Polignac number, because 2001122122203 - 2¹³ = 2001122114011 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001122122243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 184242993 + ... + 184253853.

It is an arithmetic number, because the mean of its divisors is an integer number (32444902620).

Almost surely, 2^{2001122122203} is an apocalyptic number.

2001122122203 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2001122122203 is a deficient number, since it is larger than the sum of its proper divisors (1113588529317).

2001122122203 is a wasteful number, since it uses less digits than its factorization.

2001122122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11189 (or 11186 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 2001122122203 its reverse (3022212211002), we get a palindrome (5023334333205).

The spelling of 2001122122203 in words is "two trillion, one billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred three".