121101225 has 48 divisors (see below), whose sum is σ = 229985280. Its totient is φ = 55080000.

The previous prime is 121101203. The next prime is 121101229. The reversal of 121101225 is 522101121.

It is not a de Polignac number, because 121101225 - 2⁶ = 121101161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (121101229) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131316 + ... + 132234.

It is an arithmetic number, because the mean of its divisors is an integer number (4791360).

Almost surely, 2^121101225 is an apocalyptic number.

121101225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121101225 is a deficient number, since it is larger than the sum of its proper divisors (108884055).

121101225 is a wasteful number, since it uses less digits than its factorization.

121101225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1190 (or 1185 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 121101225 is about 11004.6001744725. The cubic root of 121101225 is about 494.7466308680.

Adding to 121101225 its reverse (522101121), we get a palindrome (643202346).

The spelling of 121101225 in words is "one hundred twenty-one million, one hundred one thousand, two hundred twenty-five".