1240021240001 has 4 divisors (see below), whose sum is σ = 1240026139392. Its totient is φ = 1240016340612.

The previous prime is 1240021239997. The next prime is 1240021240091. The reversal of 1240021240001 is 1000421200421.

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 a cyclic number.

It is not a de Polignac number, because 1240021240001 - 2² = 1240021239997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1240021240091) 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, 2048105 + ... + 2583558.

It is an arithmetic number, because the mean of its divisors is an integer number (310006534848).

Almost surely, 2^{1240021240001} is an apocalyptic number.

It is an amenable number.

1240021240001 is a deficient number, since it is larger than the sum of its proper divisors (4899391).

1240021240001 is an equidigital number, since it uses as much as digits as its factorization.

1240021240001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4899390.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 1240021240001 its reverse (1000421200421), we get a palindrome (2240442440422).

The spelling of 1240021240001 in words is "one trillion, two hundred forty billion, twenty-one million, two hundred forty thousand, one".