400421244201 has 24 divisors (see below), whose sum is σ = 586917955680. Its totient is φ = 242648651520.

The previous prime is 400421244121. The next prime is 400421244203. The reversal of 400421244201 is 102442124004.

It is not a de Polignac number, because 400421244201 - 2¹⁹ = 400420719913 is a prime.

It is a super-2 number, since 2×400421244201² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (400421244203) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2966110 + ... + 3098168.

It is an arithmetic number, because the mean of its divisors is an integer number (24454914820).

Almost surely, 2^400421244201 is an apocalyptic number.

It is an amenable number.

400421244201 is a deficient number, since it is larger than the sum of its proper divisors (186496711479).

400421244201 is a wasteful number, since it uses less digits than its factorization.

400421244201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140437 (or 140426 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 400421244201 its reverse (102442124004), we get a palindrome (502863368205).

The spelling of 400421244201 in words is "four hundred billion, four hundred twenty-one million, two hundred forty-four thousand, two hundred one".