121211325 has 36 divisors (see below), whose sum is σ = 219578580. Its totient is φ = 63909120.

The previous prime is 121211323. The next prime is 121211347. The reversal of 121211325 is 523112121.

It can be written as a sum of positive squares in 6 ways, for example, as 34609689 + 86601636 = 5883^2 + 9306^2 .

It is not a de Polignac number, because 121211325 - 2¹ = 121211323 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121211298 and 121211307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211323) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 16999 + ... + 23051.

It is an arithmetic number, because the mean of its divisors is an integer number (6099405).

Almost surely, 2^121211325 is an apocalyptic number.

121211325 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121211325 is a deficient number, since it is larger than the sum of its proper divisors (98367255).

121211325 is a wasteful number, since it uses less digits than its factorization.

121211325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6158 (or 6150 counting only the distinct ones).

The product of its digits is 120, while the sum is 18.

The square root of 121211325 is about 11009.6014914256. The cubic root of 121211325 is about 494.8965195380.

Adding to 121211325 its reverse (523112121), we get a palindrome (644323446).

The spelling of 121211325 in words is "one hundred twenty-one million, two hundred eleven thousand, three hundred twenty-five".