20323203440121 has 16 divisors (see below), whose sum is σ = 30108943869120. Its totient is φ = 13548579845760.

The previous prime is 20323203440119. The next prime is 20323203440129. The reversal of 20323203440121 is 12104430232302.

20323203440121 is a `hidden beast` number, since 2 + 0 + 3 + 2 + 3 + 203 + 440 + 12 + 1 = 666.

It is not a de Polignac number, because 20323203440121 - 2¹ = 20323203440119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20323203440129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4495800 + ... + 7801193.

It is an arithmetic number, because the mean of its divisors is an integer number (1881808991820).

Almost surely, 2^{20323203440121} is an apocalyptic number.

It is an amenable number.

20323203440121 is a deficient number, since it is larger than the sum of its proper divisors (9785740428999).

20323203440121 is a wasteful number, since it uses less digits than its factorization.

20323203440121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12358213 (or 12358207 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 27.

Adding to 20323203440121 its reverse (12104430232302), we get a palindrome (32427633672423).

The spelling of 20323203440121 in words is "twenty trillion, three hundred twenty-three billion, two hundred three million, four hundred forty thousand, one hundred twenty-one".