4001040222221 has 16 divisors (see below), whose sum is σ = 4579035627264. Its totient is φ = 3424651242624.

The previous prime is 4001040222217. The next prime is 4001040222239. The reversal of 4001040222221 is 1222220401004.

It is a cyclic number.

It is not a de Polignac number, because 4001040222221 - 2² = 4001040222217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4001040222193 and 4001040222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001040222521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26537576 + ... + 26687918.

It is an arithmetic number, because the mean of its divisors is an integer number (286189726704).

Almost surely, 2^{4001040222221} is an apocalyptic number.

It is an amenable number.

4001040222221 is a deficient number, since it is larger than the sum of its proper divisors (577995405043).

4001040222221 is a wasteful number, since it uses less digits than its factorization.

4001040222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155660.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 4001040222221 its reverse (1222220401004), we get a palindrome (5223260623225).

The spelling of 4001040222221 in words is "four trillion, one billion, forty million, two hundred twenty-two thousand, two hundred twenty-one".