121120425 has 36 divisors (see below), whose sum is σ = 222818700. Its totient is φ = 62847360.

The previous prime is 121120411. The next prime is 121120429. The reversal of 121120425 is 524021121.

121120425 is a `hidden beast` number, since 121 + 120 + 425 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 8590761 + 112529664 = 2931^2 + 10608^2 .

It is not a de Polignac number, because 121120425 - 2⁴ = 121120409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121120398 and 121120407.

It is not an unprimeable number, because it can be changed into a prime (121120429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1051 + ... + 15599.

Almost surely, 2^121120425 is an apocalyptic number.

121120425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121120425 is a deficient number, since it is larger than the sum of its proper divisors (101698275).

121120425 is a wasteful number, since it uses less digits than its factorization.

121120425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14602 (or 14594 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 121120425 is about 11005.4725023508. The cubic root of 121120425 is about 494.7727760298.

Adding to 121120425 its reverse (524021121), we get a palindrome (645141546).

The spelling of 121120425 in words is "one hundred twenty-one million, one hundred twenty thousand, four hundred twenty-five".