121341003551 has 16 divisors (see below), whose sum is σ = 125807874048. Its totient is φ = 116909416800.

The previous prime is 121341003523. The next prime is 121341003569. The reversal of 121341003551 is 155300143121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121341003551 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121341003551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121341003521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11197706 + ... + 11208536.

It is an arithmetic number, because the mean of its divisors is an integer number (7862992128).

Almost surely, 2^121341003551 is an apocalyptic number.

121341003551 is a deficient number, since it is larger than the sum of its proper divisors (4466870497).

121341003551 is a wasteful number, since it uses less digits than its factorization.

121341003551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12422.

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 121341003551 its reverse (155300143121), we get a palindrome (276641146672).

The spelling of 121341003551 in words is "one hundred twenty-one billion, three hundred forty-one million, three thousand, five hundred fifty-one".