121140152225 has 12 divisors (see below), whose sum is σ = 150744588336. Its totient is φ = 96569670480.

The previous prime is 121140152171. The next prime is 121140152251. The reversal of 121140152225 is 522251041121.

It is a happy number.

It is not a de Polignac number, because 121140152225 - 2¹⁴ = 121140135841 is a prime.

It is a super-3 number, since 3×121140152225³ (a number of 34 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121140152194 and 121140152203.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8554067 + ... + 8568216.

It is an arithmetic number, because the mean of its divisors is an integer number (12562049028).

Almost surely, 2^121140152225 is an apocalyptic number.

It is an amenable number.

121140152225 is a deficient number, since it is larger than the sum of its proper divisors (29604436111).

121140152225 is a wasteful number, since it uses less digits than its factorization.

121140152225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17122576 (or 17122571 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 121140152225 its reverse (522251041121), we get a palindrome (643391193346).

The spelling of 121140152225 in words is "one hundred twenty-one billion, one hundred forty million, one hundred fifty-two thousand, two hundred twenty-five".