400100111101 has 4 divisors (see below), whose sum is σ = 423635411772. Its totient is φ = 376564810432.

The previous prime is 400100111093. The next prime is 400100111111. The reversal of 400100111101 is 101111001004.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359820022500 + 40280088601 = 599850^2 + 200699^2 .

It is a cyclic number.

It is not a de Polignac number, because 400100111101 - 2³ = 400100111093 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 (400100111111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11767650310 + ... + 11767650343.

It is an arithmetic number, because the mean of its divisors is an integer number (105908852943).

Almost surely, 2^400100111101 is an apocalyptic number.

It is an amenable number.

400100111101 is a deficient number, since it is larger than the sum of its proper divisors (23535300671).

400100111101 is a wasteful number, since it uses less digits than its factorization.

400100111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23535300670.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 400100111101 its reverse (101111001004), we get a palindrome (501211112105).

The spelling of 400100111101 in words is "four hundred billion, one hundred million, one hundred eleven thousand, one hundred one".