2203530121 has 4 divisors (see below), whose sum is σ = 2373032452. Its totient is φ = 2034027792.

The previous prime is 2203530101. The next prime is 2203530151. The reversal of 2203530121 is 1210353022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 122345721 + 2081184400 = 11061^2 + 45620^2 .

It is a cyclic number.

It is not a de Polignac number, because 2203530121 - 2¹⁵ = 2203497353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2203530101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84751146 + ... + 84751171.

It is an arithmetic number, because the mean of its divisors is an integer number (593258113).

Almost surely, 2^2203530121 is an apocalyptic number.

It is an amenable number.

2203530121 is a deficient number, since it is larger than the sum of its proper divisors (169502331).

2203530121 is a wasteful number, since it uses less digits than its factorization.

2203530121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169502330.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 2203530121 is about 46941.7737308679. The cubic root of 2203530121 is about 1301.2867183152.

Adding to 2203530121 its reverse (1210353022), we get a palindrome (3413883143).

The spelling of 2203530121 in words is "two billion, two hundred three million, five hundred thirty thousand, one hundred twenty-one".