121023013221001 has 4 divisors (see below), whose sum is σ = 121023037152004. Its totient is φ = 121022989290000.

The previous prime is 121023013220999. The next prime is 121023013221013. The reversal of 121023013221001 is 100122310320121.

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 45671915610000 + 75351097611001 = 6758100^2 + 8680501^2 .

It is a cyclic number.

It is not a de Polignac number, because 121023013221001 - 2¹ = 121023013220999 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 121023013221001.

It is not an unprimeable number, because it can be changed into a prime (121023013221031) 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, 1076850 + ... + 15595051.

It is an arithmetic number, because the mean of its divisors is an integer number (30255759288001).

Almost surely, 2^{121023013221001} is an apocalyptic number.

It is an amenable number.

121023013221001 is a deficient number, since it is larger than the sum of its proper divisors (23931003).

121023013221001 is an equidigital number, since it uses as much as digits as its factorization.

121023013221001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23931002.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 121023013221001 its reverse (100122310320121), we get a palindrome (221145323541122).

The spelling of 121023013221001 in words is "one hundred twenty-one trillion, twenty-three billion, thirteen million, two hundred twenty-one thousand, one".