121397760007 has 2 divisors, whose sum is σ = 121397760008. Its totient is φ = 121397760006.

The previous prime is 121397759999. The next prime is 121397760013. The reversal of 121397760007 is 700067793121.

It is a strong prime.

It is an emirp because it is prime and its reverse (700067793121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 121397760007 - 2³ = 121397759999 is a prime.

It is a super-2 number, since 2×121397760007² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121397760047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60698880003 + 60698880004.

It is an arithmetic number, because the mean of its divisors is an integer number (60698880004).

Almost surely, 2^121397760007 is an apocalyptic number.

121397760007 is a deficient number, since it is larger than the sum of its proper divisors (1).

121397760007 is an equidigital number, since it uses as much as digits as its factorization.

121397760007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 111132, while the sum is 43.

The spelling of 121397760007 in words is "one hundred twenty-one billion, three hundred ninety-seven million, seven hundred sixty thousand, seven".