121220107026727 has 2 divisors, whose sum is σ = 121220107026728. Its totient is φ = 121220107026726.

The previous prime is 121220107026611. The next prime is 121220107026731. The reversal of 121220107026727 is 727620701022121.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121220107026727 is a prime.

It is a super-2 number, since 2×121220107026727² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121220107026727.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121220107026737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60610053513363 + 60610053513364.

It is an arithmetic number, because the mean of its divisors is an integer number (60610053513364).

Almost surely, 2^{121220107026727} is an apocalyptic number.

121220107026727 is a deficient number, since it is larger than the sum of its proper divisors (1).

121220107026727 is an equidigital number, since it uses as much as digits as its factorization.

121220107026727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 40.

Adding to 121220107026727 its reverse (727620701022121), we get a palindrome (848840808048848).

The spelling of 121220107026727 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred seven million, twenty-six thousand, seven hundred twenty-seven".