121325510 has 16 divisors (see below), whose sum is σ = 221463072. Its totient is φ = 47846400.

The previous prime is 121325497. The next prime is 121325521. The reversal of 121325510 is 15523121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84731 + ... + 86150.

It is an arithmetic number, because the mean of its divisors is an integer number (13841442).

Almost surely, 2^121325510 is an apocalyptic number.

121325510 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121325510 is a deficient number, since it is larger than the sum of its proper divisors (100137562).

121325510 is a wasteful number, since it uses less digits than its factorization.

121325510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170959.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 121325510 is about 11014.7859715929. The cubic root of 121325510 is about 495.0518736237.

Adding to 121325510 its reverse (15523121), we get a palindrome (136848631).

The spelling of 121325510 in words is "one hundred twenty-one million, three hundred twenty-five thousand, five hundred ten".