2509011121 has 4 divisors (see below), whose sum is σ = 2509615972. Its totient is φ = 2508406272.

The previous prime is 2509011091. The next prime is 2509011137. The reversal of 2509011121 is 1211109052.

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 1537816225 + 971194896 = 39215^2 + 31164^2 .

It is a cyclic number.

It is not a de Polignac number, because 2509011121 - 2³¹ = 361527473 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2509011092 and 2509011101.

It is not an unprimeable number, because it can be changed into a prime (2509011721) 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, 296160 + ... + 304513.

It is an arithmetic number, because the mean of its divisors is an integer number (627403993).

Almost surely, 2^2509011121 is an apocalyptic number.

It is an amenable number.

2509011121 is a deficient number, since it is larger than the sum of its proper divisors (604851).

2509011121 is an equidigital number, since it uses as much as digits as its factorization.

2509011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 604850.

The product of its (nonzero) digits is 180, while the sum is 22.

The square root of 2509011121 is about 50090.0301557106. The cubic root of 2509011121 is about 1358.8375160369.

The spelling of 2509011121 in words is "two billion, five hundred nine million, eleven thousand, one hundred twenty-one".