400212101543111 has 16 divisors (see below), whose sum is σ = 470179861982208. Its totient is φ = 335841887388000.

The previous prime is 400212101543011. The next prime is 400212101543117. The reversal of 400212101543111 is 111345101212004.

It is a cyclic number.

It is not a de Polignac number, because 400212101543111 - 2⁴² = 395814055032007 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 (400212101543117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 157635230 + ... + 160153956.

It is an arithmetic number, because the mean of its divisors is an integer number (29386241373888).

Almost surely, 2^{400212101543111} is an apocalyptic number.

400212101543111 is a deficient number, since it is larger than the sum of its proper divisors (69967760439097).

400212101543111 is a wasteful number, since it uses less digits than its factorization.

400212101543111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629902.

The product of its (nonzero) digits is 960, while the sum is 26.

Adding to 400212101543111 its reverse (111345101212004), we get a palindrome (511557202755115).

The spelling of 400212101543111 in words is "four hundred trillion, two hundred twelve billion, one hundred one million, five hundred forty-three thousand, one hundred eleven".