2003221221123 has 32 divisors (see below), whose sum is σ = 2888701111296. Its totient is φ = 1229987455488.

The previous prime is 2003221221083. The next prime is 2003221221149. The reversal of 2003221221123 is 3211221223002.

It is not a de Polignac number, because 2003221221123 - 2¹⁷ = 2003221090051 is a prime.

It is a super-2 number, since 2×2003221221123² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2003221221123.

It is not an unprimeable number, because it can be changed into a prime (2003221221163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16076940 + ... + 16201062.

It is an arithmetic number, because the mean of its divisors is an integer number (90271909728).

Almost surely, 2^{2003221221123} is an apocalyptic number.

2003221221123 is a deficient number, since it is larger than the sum of its proper divisors (885479890173).

2003221221123 is a wasteful number, since it uses less digits than its factorization.

2003221221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130923.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 2003221221123 its reverse (3211221223002), we get a palindrome (5214442444125).

The spelling of 2003221221123 in words is "two trillion, three billion, two hundred twenty-one million, two hundred twenty-one thousand, one hundred twenty-three".