20400110134220 has 24 divisors (see below), whose sum is σ = 42844841618544. Its totient is φ = 8159165894336.

The previous prime is 20400110134199. The next prime is 20400110134289. The reversal of 20400110134220 is 2243101100402.

It is a super-3 number, since 3×20400110134220³ (a number of 41 digits) contains 333 as substring.

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 = 20400110134192 and 20400110134201.

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, 54694454 + ... + 55066173.

It is an arithmetic number, because the mean of its divisors is an integer number (1785201734106).

Almost surely, 2^{20400110134220} is an apocalyptic number.

20400110134220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20400110134220 is an abundant number, since it is smaller than the sum of its proper divisors (22444731484324).

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

20400110134220 is a wasteful number, since it uses less digits than its factorization.

20400110134220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109769929 (or 109769927 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20400110134220 its reverse (2243101100402), we get a palindrome (22643211234622).

The spelling of 20400110134220 in words is "twenty trillion, four hundred billion, one hundred ten million, one hundred thirty-four thousand, two hundred twenty".