121100425 has 6 divisors (see below), whose sum is σ = 150164558. Its totient is φ = 96880320.

The previous prime is 121100411. The next prime is 121100437. The reversal of 121100425 is 524001121.

It can be written as a sum of positive squares in 3 ways, for example, as 3356224 + 117744201 = 1832^2 + 10851^2 .

It is not a de Polignac number, because 121100425 - 2¹⁵ = 121067657 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121100399 and 121100408.

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, 2421984 + ... + 2422033.

Almost surely, 2^121100425 is an apocalyptic number.

It is an amenable number.

121100425 is a deficient number, since it is larger than the sum of its proper divisors (29064133).

121100425 is an equidigital number, since it uses as much as digits as its factorization.

121100425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844027 (or 4844022 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 121100425 is about 11004.5638259769. The cubic root of 121100425 is about 494.7455414263.

Adding to 121100425 its reverse (524001121), we get a palindrome (645101546).

The spelling of 121100425 in words is "one hundred twenty-one million, one hundred thousand, four hundred twenty-five".