121040252511 has 16 divisors (see below), whose sum is σ = 164418633984. Its totient is φ = 79186846464.

The previous prime is 121040252503. The next prime is 121040252561. The reversal of 121040252511 is 115252040121.

It is a happy number.

It is not a de Polignac number, because 121040252511 - 2³ = 121040252503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121040252561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1091986 + ... + 1197711.

It is an arithmetic number, because the mean of its divisors is an integer number (10276164624).

Almost surely, 2^121040252511 is an apocalyptic number.

121040252511 is a deficient number, since it is larger than the sum of its proper divisors (43378381473).

121040252511 is a wasteful number, since it uses less digits than its factorization.

121040252511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2290030.

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 121040252511 its reverse (115252040121), we get a palindrome (236292292632).

The spelling of 121040252511 in words is "one hundred twenty-one billion, forty million, two hundred fifty-two thousand, five hundred eleven".