2003401121 has 2 divisors, whose sum is σ = 2003401122. Its totient is φ = 2003401120.

The previous prime is 2003401117. The next prime is 2003401139. The reversal of 2003401121 is 1211043002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1845647521 + 157753600 = 42961^2 + 12560^2 .

It is a cyclic number.

It is not a de Polignac number, because 2003401121 - 2² = 2003401117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2003401096 and 2003401105.

It is not a weakly prime, because it can be changed into another prime (2003401111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1001700560 + 1001700561.

It is an arithmetic number, because the mean of its divisors is an integer number (1001700561).

Almost surely, 2^2003401121 is an apocalyptic number.

It is an amenable number.

2003401121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2003401121 is an equidigital number, since it uses as much as digits as its factorization.

2003401121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2003401121 is about 44759.3690862595. The cubic root of 2003401121 is about 1260.6348360923.

Adding to 2003401121 its reverse (1211043002), we get a palindrome (3214444123).

The spelling of 2003401121 in words is "two billion, three million, four hundred one thousand, one hundred twenty-one".