400211121112020 has 144 divisors (see below), whose sum is σ = 1274871620655360. Its totient is φ = 105372041913216.

The previous prime is 400211121111917. The next prime is 400211121112021. The reversal of 400211121112020 is 20211121112004.

400211121112020 is a `hidden beast` number, since 40 + 0 + 211 + 1 + 211 + 1 + 202 + 0 = 666.

It is a super-2 number, since 2×400211121112020² (a number of 30 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 400211121111984 and 400211121112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400211121112021) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 520805727 + ... + 521573606.

It is an arithmetic number, because the mean of its divisors is an integer number (8853275143440).

Almost surely, 2^{400211121112020} is an apocalyptic number.

It is an amenable number.

400211121112020 is an abundant number, since it is smaller than the sum of its proper divisors (874660499543340).

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

400211121112020 is a wasteful number, since it uses less digits than its factorization.

400211121112020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042379436 (or 1042379422 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 400211121112020 its reverse (20211121112004), we get a palindrome (420422242224024).

The spelling of 400211121112020 in words is "four hundred trillion, two hundred eleven billion, one hundred twenty-one million, one hundred twelve thousand, twenty".