2261544121 has 2 divisors, whose sum is σ = 2261544122. Its totient is φ = 2261544120.

The previous prime is 2261544113. The next prime is 2261544191. The reversal of 2261544121 is 1214451622.

2261544121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2259956521 + 1587600 = 47539^2 + 1260^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261544121 - 2³ = 2261544113 is a prime.

It is a super-2 number, since 2×2261544121² = 10229163622459325282, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2261544121.

It is not a weakly prime, because it can be changed into another prime (2261544191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130772060 + 1130772061.

It is an arithmetic number, because the mean of its divisors is an integer number (1130772061).

Almost surely, 2^2261544121 is an apocalyptic number.

It is an amenable number.

2261544121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261544121 is an equidigital number, since it uses as much as digits as its factorization.

2261544121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3840, while the sum is 28.

The square root of 2261544121 is about 47555.6949376202. The cubic root of 2261544121 is about 1312.6079238359.

Adding to 2261544121 its reverse (1214451622), we get a palindrome (3475995743).

The spelling of 2261544121 in words is "two billion, two hundred sixty-one million, five hundred forty-four thousand, one hundred twenty-one".