121020201323 has 6 divisors (see below), whose sum is σ = 140778601596. Its totient is φ = 103731601092.

The previous prime is 121020201319. The next prime is 121020201331. The reversal of 121020201323 is 323102020121.

It is not a de Polignac number, because 121020201323 - 2² = 121020201319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121020201343) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1234899965 + ... + 1234900062.

It is an arithmetic number, because the mean of its divisors is an integer number (23463100266).

Almost surely, 2^121020201323 is an apocalyptic number.

121020201323 is a deficient number, since it is larger than the sum of its proper divisors (19758400273).

121020201323 is an equidigital number, since it uses as much as digits as its factorization.

121020201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2469800041 (or 2469800034 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 121020201323 its reverse (323102020121), we get a palindrome (444122221444).

The spelling of 121020201323 in words is "one hundred twenty-one billion, twenty million, two hundred one thousand, three hundred twenty-three".