2043021220400 has 60 divisors (see below), whose sum is σ = 5077612251600. Its totient is φ = 789028880640.

The previous prime is 2043021220391. The next prime is 2043021220439. The reversal of 2043021220400 is 40221203402.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88049660 + ... + 88072859.

It is an arithmetic number, because the mean of its divisors is an integer number (84626870860).

Almost surely, 2^{2043021220400} is an apocalyptic number.

2043021220400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2043021220400 is an abundant number, since it is smaller than the sum of its proper divisors (3034591031200).

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

2043021220400 is a wasteful number, since it uses less digits than its factorization.

2043021220400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176122566 (or 176122555 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 2043021220400 its reverse (40221203402), we get a palindrome (2083242423802).

The spelling of 2043021220400 in words is "two trillion, forty-three billion, twenty-one million, two hundred twenty thousand, four hundred".