400200403101220 has 192 divisors, whose sum is σ = 911153699979264. Its totient is φ = 147215106339840.

The previous prime is 400200403101211. The next prime is 400200403101253. The reversal of 400200403101220 is 22101304002004.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6306011209 + ... + 6306074671.

It is an arithmetic number, because the mean of its divisors is an integer number (4745592187392).

Almost surely, 2^{400200403101220} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 400200403101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (455576849989632).

400200403101220 is an abundant number, since it is smaller than the sum of its proper divisors (510953296878044).

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

400200403101220 is a wasteful number, since it uses less digits than its factorization.

400200403101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66402 (or 66400 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 400200403101220 its reverse (22101304002004), we get a palindrome (422301707103224).

The spelling of 400200403101220 in words is "four hundred trillion, two hundred billion, four hundred three million, one hundred one thousand, two hundred twenty".