121313220123001 has 4 divisors (see below), whose sum is σ = 121313319785892. Its totient is φ = 121313120460112.

The previous prime is 121313220122957. The next prime is 121313220123077. The reversal of 121313220123001 is 100321022313121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10266410607376 + 111046809515625 = 3204124^2 + 10537875^2 .

It is a cyclic number.

It is not a de Polignac number, because 121313220123001 - 2¹³ = 121313220114809 is a prime.

It is a super-2 number, since 2×121313220123001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121313220121001) 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, 47982730 + ... + 50447683.

It is an arithmetic number, because the mean of its divisors is an integer number (30328329946473).

Almost surely, 2^{121313220123001} is an apocalyptic number.

It is an amenable number.

121313220123001 is a deficient number, since it is larger than the sum of its proper divisors (99662891).

121313220123001 is an equidigital number, since it uses as much as digits as its factorization.

121313220123001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99662890.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121313220123001 its reverse (100321022313121), we get a palindrome (221634242436122).

The spelling of 121313220123001 in words is "one hundred twenty-one trillion, three hundred thirteen billion, two hundred twenty million, one hundred twenty-three thousand, one".