121313344153 has 4 divisors (see below), whose sum is σ = 121314453940. Its totient is φ = 121312234368.

The previous prime is 121313344151. The next prime is 121313344157. The reversal of 121313344153 is 351443313121.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 22568451984 + 98744892169 = 150228^2 + 314237^2 .

It is a cyclic number.

It is not a de Polignac number, because 121313344153 - 2¹ = 121313344151 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121313344151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370500 + ... + 616357.

It is an arithmetic number, because the mean of its divisors is an integer number (30328613485).

Almost surely, 2^121313344153 is an apocalyptic number.

It is an amenable number.

121313344153 is a deficient number, since it is larger than the sum of its proper divisors (1109787).

121313344153 is an equidigital number, since it uses as much as digits as its factorization.

121313344153 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1109786.

The product of its digits is 12960, while the sum is 31.

Adding to 121313344153 its reverse (351443313121), we get a palindrome (472756657274).

The spelling of 121313344153 in words is "one hundred twenty-one billion, three hundred thirteen million, three hundred forty-four thousand, one hundred fifty-three".