2261225121 has 4 divisors (see below), whose sum is σ = 3014966832. Its totient is φ = 1507483412.

The previous prime is 2261225077. The next prime is 2261225123. The reversal of 2261225121 is 1215221622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2261225121 - 2¹¹ = 2261223073 is a prime.

It is a super-2 number, since 2×2261225121² = 10226278095682929282, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2261225091 and 2261225100.

It is not an unprimeable number, because it can be changed into a prime (2261225123) 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, 376870851 + ... + 376870856.

It is an arithmetic number, because the mean of its divisors is an integer number (753741708).

Almost surely, 2^2261225121 is an apocalyptic number.

It is an amenable number.

2261225121 is a deficient number, since it is larger than the sum of its proper divisors (753741711).

2261225121 is an equidigital number, since it uses as much as digits as its factorization.

2261225121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 753741710.

The product of its digits is 960, while the sum is 24.

The square root of 2261225121 is about 47552.3408572070. The cubic root of 2261225121 is about 1312.5462047045.

Adding to 2261225121 its reverse (1215221622), we get a palindrome (3476446743).

The spelling of 2261225121 in words is "two billion, two hundred sixty-one million, two hundred twenty-five thousand, one hundred twenty-one".