2003120312221 has 32 divisors (see below), whose sum is σ = 2377728009216. Its totient is φ = 1651798656000.

The previous prime is 2003120312213. The next prime is 2003120312261. The reversal of 2003120312221 is 1222130213002.

It is a cyclic number.

It is not a de Polignac number, because 2003120312221 - 2³ = 2003120312213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2003120312261) 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, 196745751 + ... + 196755931.

It is an arithmetic number, because the mean of its divisors is an integer number (74304000288).

Almost surely, 2^{2003120312221} is an apocalyptic number.

It is an amenable number.

2003120312221 is a deficient number, since it is larger than the sum of its proper divisors (374607696995).

2003120312221 is a wasteful number, since it uses less digits than its factorization.

2003120312221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19693.

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

Adding to 2003120312221 its reverse (1222130213002), we get a palindrome (3225250525223).

The spelling of 2003120312221 in words is "two trillion, three billion, one hundred twenty million, three hundred twelve thousand, two hundred twenty-one".