20133123120020 has 48 divisors (see below), whose sum is σ = 42522311749008. Its totient is φ = 8007029729280.

The previous prime is 20133123120001. The next prime is 20133123120037. The reversal of 20133123120020 is 2002132133102.

It can be written as a sum of positive squares in 8 ways, for example, as 6343456778884 + 13789666341136 = 2518622^2 + 3713444^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20133123119974 and 20133123120001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16261214 + ... + 17455466.

It is an arithmetic number, because the mean of its divisors is an integer number (885881494771).

Almost surely, 2^{20133123120020} is an apocalyptic number.

20133123120020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20133123120020 is an abundant number, since it is smaller than the sum of its proper divisors (22389188628988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20133123120020 is a wasteful number, since it uses less digits than its factorization.

20133123120020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1199100 (or 1199098 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20133123120020 its reverse (2002132133102), we get a palindrome (22135255253122).

The spelling of 20133123120020 in words is "twenty trillion, one hundred thirty-three billion, one hundred twenty-three million, one hundred twenty thousand, twenty".