121020100323 has 4 divisors (see below), whose sum is σ = 161360133768. Its totient is φ = 80680066880.

The previous prime is 121020100321. The next prime is 121020100349. The reversal of 121020100323 is 323001020121.

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

It is a cyclic number.

It is not a de Polignac number, because 121020100323 - 2¹ = 121020100321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121020100321) 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, 20170016718 + ... + 20170016723.

It is an arithmetic number, because the mean of its divisors is an integer number (40340033442).

Almost surely, 2^121020100323 is an apocalyptic number.

121020100323 is a deficient number, since it is larger than the sum of its proper divisors (40340033445).

121020100323 is an equidigital number, since it uses as much as digits as its factorization.

121020100323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40340033444.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 121020100323 its reverse (323001020121), we get a palindrome (444021120444).

The spelling of 121020100323 in words is "one hundred twenty-one billion, twenty million, one hundred thousand, three hundred twenty-three".