2240681210281 has 4 divisors (see below), whose sum is σ = 2240728274772. Its totient is φ = 2240634145792.

The previous prime is 2240681210279. The next prime is 2240681210293. The reversal of 2240681210281 is 1820121860422.

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 2028086443881 + 212594766400 = 1424109^2 + 461080^2 .

It is a cyclic number.

It is not a de Polignac number, because 2240681210281 - 2¹ = 2240681210279 is a prime.

It is a super-2 number, since 2×2240681210281² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2240681210281.

It is not an unprimeable number, because it can be changed into a prime (2240681210081) 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, 23460760 + ... + 23556073.

It is an arithmetic number, because the mean of its divisors is an integer number (560182068693).

Almost surely, 2^{2240681210281} is an apocalyptic number.

It is an amenable number.

2240681210281 is a deficient number, since it is larger than the sum of its proper divisors (47064491).

2240681210281 is an equidigital number, since it uses as much as digits as its factorization.

2240681210281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47064490.

The product of its (nonzero) digits is 24576, while the sum is 37.

The spelling of 2240681210281 in words is "two trillion, two hundred forty billion, six hundred eighty-one million, two hundred ten thousand, two hundred eighty-one".