121669050025 has 6 divisors (see below), whose sum is σ = 150869622062. Its totient is φ = 97335240000.

The previous prime is 121669050017. The next prime is 121669050043. The reversal of 121669050025 is 520050966121.

It can be written as a sum of positive squares in 3 ways, for example, as 39132356761 + 82536693264 = 197819^2 + 287292^2 .

It is not a de Polignac number, because 121669050025 - 2³ = 121669050017 is a prime.

It is a super-3 number, since 3×121669050025³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2433380976 + ... + 2433381025.

Almost surely, 2^121669050025 is an apocalyptic number.

It is an amenable number.

121669050025 is a deficient number, since it is larger than the sum of its proper divisors (29200572037).

121669050025 is an equidigital number, since it uses as much as digits as its factorization.

121669050025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4866762011 (or 4866762006 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 121669050025 in words is "one hundred twenty-one billion, six hundred sixty-nine million, fifty thousand, twenty-five".