20030123131220 has 24 divisors (see below), whose sum is σ = 42691068407904. Its totient is φ = 7892466427296.

The previous prime is 20030123131199. The next prime is 20030123131237. The reversal of 20030123131220 is 2213132103002.

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 = 20030123131192 and 20030123131201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7473925202 + ... + 7473927881.

It is an arithmetic number, because the mean of its divisors is an integer number (1778794516996).

Almost surely, 2^{20030123131220} is an apocalyptic number.

20030123131220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20030123131220 is an abundant number, since it is smaller than the sum of its proper divisors (22660945276684).

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

20030123131220 is a wasteful number, since it uses less digits than its factorization.

20030123131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14947853159 (or 14947853157 counting only the distinct ones).

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

Adding to 20030123131220 its reverse (2213132103002), we get a palindrome (22243255234222).

The spelling of 20030123131220 in words is "twenty trillion, thirty billion, one hundred twenty-three million, one hundred thirty-one thousand, two hundred twenty".