121520225185607 has 2 divisors, whose sum is σ = 121520225185608. Its totient is φ = 121520225185606.

The previous prime is 121520225185561. The next prime is 121520225185669. The reversal of 121520225185607 is 706581522025121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121520225185607 - 2⁴⁰ = 120420713557831 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121520225182607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60760112592803 + 60760112592804.

It is an arithmetic number, because the mean of its divisors is an integer number (60760112592804).

Almost surely, 2^{121520225185607} is an apocalyptic number.

121520225185607 is a deficient number, since it is larger than the sum of its proper divisors (1).

121520225185607 is an equidigital number, since it uses as much as digits as its factorization.

121520225185607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672000, while the sum is 47.

The spelling of 121520225185607 in words is "one hundred twenty-one trillion, five hundred twenty billion, two hundred twenty-five million, one hundred eighty-five thousand, six hundred seven".