121404544727 has 2 divisors, whose sum is σ = 121404544728. Its totient is φ = 121404544726.

The previous prime is 121404544717. The next prime is 121404544733. The reversal of 121404544727 is 727445404121.

It is a strong prime.

It is an emirp because it is prime and its reverse (727445404121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121404544727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121404544717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60702272363 + 60702272364.

It is an arithmetic number, because the mean of its divisors is an integer number (60702272364).

Almost surely, 2^121404544727 is an apocalyptic number.

121404544727 is a deficient number, since it is larger than the sum of its proper divisors (1).

121404544727 is an equidigital number, since it uses as much as digits as its factorization.

121404544727 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250880, while the sum is 41.

Adding to 121404544727 its reverse (727445404121), we get a palindrome (848849948848).

The spelling of 121404544727 in words is "one hundred twenty-one billion, four hundred four million, five hundred forty-four thousand, seven hundred twenty-seven".