20132223121121 has 4 divisors (see below), whose sum is σ = 20236535158212. Its totient is φ = 20027911084032.

The previous prime is 20132223121103. The next prime is 20132223121141. The reversal of 20132223121121 is 12112132223102.

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 6353873034721 + 13778350086400 = 2520689^2 + 3711920^2 .

It is a cyclic number.

It is not a de Polignac number, because 20132223121121 - 2²⁶ = 20132156012257 is a prime.

It is a super-3 number, since 3×20132223121121³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20132223121141) 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, 52156018256 + ... + 52156018641.

It is an arithmetic number, because the mean of its divisors is an integer number (5059133789553).

Almost surely, 2^{20132223121121} is an apocalyptic number.

It is an amenable number.

20132223121121 is a deficient number, since it is larger than the sum of its proper divisors (104312037091).

20132223121121 is a wasteful number, since it uses less digits than its factorization.

20132223121121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104312037090.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 20132223121121 its reverse (12112132223102), we get a palindrome (32244355344223).

The spelling of 20132223121121 in words is "twenty trillion, one hundred thirty-two billion, two hundred twenty-three million, one hundred twenty-one thousand, one hundred twenty-one".