1240112221077 has 4 divisors (see below), whose sum is σ = 1653482961440. Its totient is φ = 826741480716.

The previous prime is 1240112221069. The next prime is 1240112221079. The reversal of 1240112221077 is 7701222110421.

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 not a de Polignac number, because 1240112221077 - 2³ = 1240112221069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1240112221079) 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, 206685370177 + ... + 206685370182.

It is an arithmetic number, because the mean of its divisors is an integer number (413370740360).

Almost surely, 2^{1240112221077} is an apocalyptic number.

It is an amenable number.

1240112221077 is a deficient number, since it is larger than the sum of its proper divisors (413370740363).

1240112221077 is an equidigital number, since it uses as much as digits as its factorization.

1240112221077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413370740362.

The product of its (nonzero) digits is 3136, while the sum is 30.

Adding to 1240112221077 its reverse (7701222110421), we get a palindrome (8941334331498).

The spelling of 1240112221077 in words is "one trillion, two hundred forty billion, one hundred twelve million, two hundred twenty-one thousand, seventy-seven".