1242275265611 has 4 divisors (see below), whose sum is σ = 1245794459352. Its totient is φ = 1238756071872.

The previous prime is 1242275265607. The next prime is 1242275265619. The reversal of 1242275265611 is 1165625722421.

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

It is a cyclic number.

It is not a de Polignac number, because 1242275265611 - 2² = 1242275265607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1242275265619) 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, 1759596341 + ... + 1759597046.

It is an arithmetic number, because the mean of its divisors is an integer number (311448614838).

Almost surely, 2^{1242275265611} is an apocalyptic number.

1242275265611 is a deficient number, since it is larger than the sum of its proper divisors (3519193741).

1242275265611 is an equidigital number, since it uses as much as digits as its factorization.

1242275265611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3519193740.

The product of its digits is 403200, while the sum is 44.

The spelling of 1242275265611 in words is "one trillion, two hundred forty-two billion, two hundred seventy-five million, two hundred sixty-five thousand, six hundred eleven".