121432225 has 6 divisors (see below), whose sum is σ = 150575990. Its totient is φ = 97145760.

The previous prime is 121432219. The next prime is 121432247. The reversal of 121432225 is 522234121.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 11350161 + 110082064 = 3369^2 + 10492^2 .

It is not a de Polignac number, because 121432225 - 2¹⁵ = 121399457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121432196 and 121432205.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2428620 + ... + 2428669.

Almost surely, 2^121432225 is an apocalyptic number.

It is an amenable number.

121432225 is a deficient number, since it is larger than the sum of its proper divisors (29143765).

121432225 is an equidigital number, since it uses as much as digits as its factorization.

121432225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4857299 (or 4857294 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 121432225 is about 11019.6290772421. The cubic root of 121432225 is about 495.1969763287.

Adding to 121432225 its reverse (522234121), we get a palindrome (643666346).

It can be divided in two parts, 121 and 432225, that multiplied together give a palindrome (52299225).

The spelling of 121432225 in words is "one hundred twenty-one million, four hundred thirty-two thousand, two hundred twenty-five".