121325511 has 4 divisors (see below), whose sum is σ = 161767352. Its totient is φ = 80883672.

The previous prime is 121325497. The next prime is 121325521. The reversal of 121325511 is 115523121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121325511 - 2¹⁹ = 120801223 is a prime.

It is a super-2 number, since 2×121325511² = 29439759238822242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121325521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20220916 + ... + 20220921.

It is an arithmetic number, because the mean of its divisors is an integer number (40441838).

Almost surely, 2^121325511 is an apocalyptic number.

121325511 is a deficient number, since it is larger than the sum of its proper divisors (40441841).

121325511 is an equidigital number, since it uses as much as digits as its factorization.

121325511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40441840.

The product of its digits is 300, while the sum is 21.

The square root of 121325511 is about 11014.7860169864. The cubic root of 121325511 is about 495.0518749838.

Adding to 121325511 its reverse (115523121), we get a palindrome (236848632).

The spelling of 121325511 in words is "one hundred twenty-one million, three hundred twenty-five thousand, five hundred eleven".