121442241816 has 96 divisors (see below), whose sum is σ = 389814647040. Its totient is φ = 34697779488.

The previous prime is 121442241799. The next prime is 121442241829. The reversal of 121442241816 is 618142244121.

121442241816 is a `hidden beast` number, since 1 + 214 + 4 + 22 + 418 + 1 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4448556 + ... + 4475771.

It is an arithmetic number, because the mean of its divisors is an integer number (4060569240).

Almost surely, 2^121442241816 is an apocalyptic number.

It is an amenable number.

121442241816 is an abundant number, since it is smaller than the sum of its proper divisors (268372405224).

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

121442241816 is an equidigital number, since it uses as much as digits as its factorization.

121442241816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8924355 (or 8924339 counting only the distinct ones).

The product of its digits is 24576, while the sum is 36.

Adding to 121442241816 its reverse (618142244121), we get a palindrome (739584485937).

The spelling of 121442241816 in words is "one hundred twenty-one billion, four hundred forty-two million, two hundred forty-one thousand, eight hundred sixteen".