121355325350 has 48 divisors (see below), whose sum is σ = 273141276768. Its totient is φ = 39160035840.

The previous prime is 121355325349. The next prime is 121355325359. The reversal of 121355325350 is 53523553121.

It is a super-2 number, since 2×121355325350² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 121355325350.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121355325359) 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 23 ways as a sum of consecutive naturals, for example, 10191977 + ... + 10203876.

It is an arithmetic number, because the mean of its divisors is an integer number (5690443266).

Almost surely, 2^121355325350 is an apocalyptic number.

121355325350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121355325350 is an abundant number, since it is smaller than the sum of its proper divisors (151785951418).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121355325350 is a wasteful number, since it uses less digits than its factorization.

121355325350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20395889 (or 20395884 counting only the distinct ones).

The product of its (nonzero) digits is 67500, while the sum is 35.

Adding to 121355325350 its reverse (53523553121), we get a palindrome (174878878471).

The spelling of 121355325350 in words is "one hundred twenty-one billion, three hundred fifty-five million, three hundred twenty-five thousand, three hundred fifty".