1240121021327 has 2 divisors, whose sum is σ = 1240121021328. Its totient is φ = 1240121021326.

The previous prime is 1240121021311. The next prime is 1240121021353. The reversal of 1240121021327 is 7231201210421.

It is a happy number.

It is an a-pointer prime, because the next prime (1240121021353) can be obtained adding 1240121021327 to its sum of digits (26).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1240121021327 - 2⁴ = 1240121021311 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1240121021296 and 1240121021305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1240121021387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 620060510663 + 620060510664.

It is an arithmetic number, because the mean of its divisors is an integer number (620060510664).

Almost surely, 2^{1240121021327} is an apocalyptic number.

1240121021327 is a deficient number, since it is larger than the sum of its proper divisors (1).

1240121021327 is an equidigital number, since it uses as much as digits as its factorization.

1240121021327 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 1240121021327 its reverse (7231201210421), we get a palindrome (8471322231748).

The spelling of 1240121021327 in words is "one trillion, two hundred forty billion, one hundred twenty-one million, twenty-one thousand, three hundred twenty-seven".