401218272011 has 4 divisors (see below), whose sum is σ = 402276895800. Its totient is φ = 400159648224.

The previous prime is 401218271963. The next prime is 401218272017. The reversal of 401218272011 is 110272812104.

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

It is a cyclic number.

It is not a de Polignac number, because 401218272011 - 2¹⁸ = 401218009867 is a prime.

It is a super-2 number, since 2×401218272011² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401218272017) 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 3 ways as a sum of consecutive naturals, for example, 529311326 + ... + 529312083.

It is an arithmetic number, because the mean of its divisors is an integer number (100569223950).

Almost surely, 2^401218272011 is an apocalyptic number.

401218272011 is a deficient number, since it is larger than the sum of its proper divisors (1058623789).

401218272011 is a wasteful number, since it uses less digits than its factorization.

401218272011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058623788.

The product of its (nonzero) digits is 1792, while the sum is 29.

The spelling of 401218272011 in words is "four hundred one billion, two hundred eighteen million, two hundred seventy-two thousand, eleven".