400021113101 has 16 divisors (see below), whose sum is σ = 402336460800. Its totient is φ = 397714735728.

The previous prime is 400021113083. The next prime is 400021113109. The reversal of 400021113101 is 101311120004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400021113101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400021113109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292626320 + ... + 292627686.

It is an arithmetic number, because the mean of its divisors is an integer number (25146028800).

Almost surely, 2^400021113101 is an apocalyptic number.

It is an amenable number.

400021113101 is a deficient number, since it is larger than the sum of its proper divisors (2315347699).

400021113101 is a wasteful number, since it uses less digits than its factorization.

400021113101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3568.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 400021113101 its reverse (101311120004), we get a palindrome (501332233105).

The spelling of 400021113101 in words is "four hundred billion, twenty-one million, one hundred thirteen thousand, one hundred one".