121440040027 has 2 divisors, whose sum is σ = 121440040028. Its totient is φ = 121440040026.

The previous prime is 121440040019. The next prime is 121440040049. The reversal of 121440040027 is 720040044121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121440040027 - 2³ = 121440040019 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121440039983 and 121440040010.

It is not a weakly prime, because it can be changed into another prime (121440040087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60720020013 + 60720020014.

It is an arithmetic number, because the mean of its divisors is an integer number (60720020014).

Almost surely, 2^121440040027 is an apocalyptic number.

121440040027 is a deficient number, since it is larger than the sum of its proper divisors (1).

121440040027 is an equidigital number, since it uses as much as digits as its factorization.

121440040027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 25.

Adding to 121440040027 its reverse (720040044121), we get a palindrome (841480084148).

The spelling of 121440040027 in words is "one hundred twenty-one billion, four hundred forty million, forty thousand, twenty-seven".