1120203421 has 2 divisors, whose sum is σ = 1120203422. Its totient is φ = 1120203420.

The previous prime is 1120203391. The next prime is 1120203439. The reversal of 1120203421 is 1243020211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 741472900 + 378730521 = 27230^2 + 19461^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120203421 - 2²⁵ = 1086648989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120203395 and 1120203404.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120203521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560101710 + 560101711.

It is an arithmetic number, because the mean of its divisors is an integer number (560101711).

Almost surely, 2^1120203421 is an apocalyptic number.

It is an amenable number.

1120203421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120203421 is an equidigital number, since it uses as much as digits as its factorization.

1120203421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 1120203421 is about 33469.4401058637. The cubic root of 1120203421 is about 1038.5616893227.

Adding to 1120203421 its reverse (1243020211), we get a palindrome (2363223632).

The spelling of 1120203421 in words is "one billion, one hundred twenty million, two hundred three thousand, four hundred twenty-one".