4001000311221 has 16 divisors (see below), whose sum is σ = 5353843471680. Its totient is φ = 2657746494720.

The previous prime is 4001000311219. The next prime is 4001000311237. The reversal of 4001000311221 is 1221130001004.

It is not a de Polignac number, because 4001000311221 - 2¹ = 4001000311219 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4001000311221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001000311201) 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 15 ways as a sum of consecutive naturals, for example, 14713431 + ... + 14982891.

It is an arithmetic number, because the mean of its divisors is an integer number (334615216980).

Almost surely, 2^{4001000311221} is an apocalyptic number.

It is an amenable number.

4001000311221 is a deficient number, since it is larger than the sum of its proper divisors (1352843160459).

4001000311221 is a wasteful number, since it uses less digits than its factorization.

4001000311221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287236.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 4001000311221 its reverse (1221130001004), we get a palindrome (5222130312225).

The spelling of 4001000311221 in words is "four trillion, one billion, three hundred eleven thousand, two hundred twenty-one".