121510243512025 has 12 divisors (see below), whose sum is σ = 151574933708352. Its totient is φ = 96626109807440.

The previous prime is 121510243512019. The next prime is 121510243512029. The reversal of 121510243512025 is 520215342015121.

It is not a de Polignac number, because 121510243512025 - 2³ = 121510243512017 is a prime.

It is a super-2 number, since 2×121510243512025² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121510243512029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14552120797 + ... + 14552129146.

It is an arithmetic number, because the mean of its divisors is an integer number (12631244475696).

Almost surely, 2^{121510243512025} is an apocalyptic number.

It is an amenable number.

121510243512025 is a deficient number, since it is larger than the sum of its proper divisors (30064690196327).

121510243512025 is a wasteful number, since it uses less digits than its factorization.

121510243512025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29104250120 (or 29104250115 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 34.

Adding to 121510243512025 its reverse (520215342015121), we get a palindrome (641725585527146).

The spelling of 121510243512025 in words is "one hundred twenty-one trillion, five hundred ten billion, two hundred forty-three million, five hundred twelve thousand, twenty-five".