4013221144061 has 2 divisors, whose sum is σ = 4013221144062. Its totient is φ = 4013221144060.

The previous prime is 4013221144043. The next prime is 4013221144147. The reversal of 4013221144061 is 1604411223104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3985636916836 + 27584227225 = 1996406^2 + 166085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4013221144061 is a prime.

It is a super-2 number, since 2×4013221144061² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4013221044061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2006610572030 + 2006610572031.

It is an arithmetic number, because the mean of its divisors is an integer number (2006610572031).

Almost surely, 2^{4013221144061} is an apocalyptic number.

It is an amenable number.

4013221144061 is a deficient number, since it is larger than the sum of its proper divisors (1).

4013221144061 is an equidigital number, since it uses as much as digits as its factorization.

4013221144061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4608, while the sum is 29.

Adding to 4013221144061 its reverse (1604411223104), we get a palindrome (5617632367165).

The spelling of 4013221144061 in words is "four trillion, thirteen billion, two hundred twenty-one million, one hundred forty-four thousand, sixty-one".