400010001101 has 4 divisors (see below), whose sum is σ = 400046679900. Its totient is φ = 399973322304.

The previous prime is 400010001043. The next prime is 400010001119. The reversal of 400010001101 is 101100010004.

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 125051347876 + 274958653225 = 353626^2 + 524365^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400010001101 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 (400010001151) 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, 18323036 + ... + 18344853.

It is an arithmetic number, because the mean of its divisors is an integer number (100011669975).

Almost surely, 2^400010001101 is an apocalyptic number.

It is an amenable number.

400010001101 is a deficient number, since it is larger than the sum of its proper divisors (36678799).

400010001101 is a wasteful number, since it uses less digits than its factorization.

400010001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36678798.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 400010001101 its reverse (101100010004), we get a palindrome (501110011105).

The spelling of 400010001101 in words is "four hundred billion, ten million, one thousand, one hundred one".