394228110121001 has 8 divisors (see below), whose sum is σ = 424724747598984. Its totient is φ = 363755958105600.

The previous prime is 394228110120989. The next prime is 394228110121007. The reversal of 394228110121001 is 100121011822493.

It can be written as a sum of positive squares in 4 ways, for example, as 73561909926976 + 320666200194025 = 8576824^2 + 17907155^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 394228110121001 - 2⁶ = 394228110120937 is a prime.

It is a super-2 number, since 2×394228110121001² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (394228110121007) 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 7 ways as a sum of consecutive naturals, for example, 6121332200 + ... + 6121396601.

It is an arithmetic number, because the mean of its divisors is an integer number (53090593449873).

Almost surely, 2^{394228110121001} is an apocalyptic number.

It is an amenable number.

394228110121001 is a deficient number, since it is larger than the sum of its proper divisors (30496637477983).

394228110121001 is a wasteful number, since it uses less digits than its factorization.

394228110121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12242731291.

The product of its (nonzero) digits is 6912, while the sum is 35.

Adding to 394228110121001 its reverse (100121011822493), we get a palindrome (494349121943494).

The spelling of 394228110121001 in words is "three hundred ninety-four trillion, two hundred twenty-eight billion, one hundred ten million, one hundred twenty-one thousand, one".