400111203313321 has 16 divisors (see below), whose sum is σ = 407620860565248. Its totient is φ = 392655141849600.

The previous prime is 400111203313319. The next prime is 400111203313363. The reversal of 400111203313321 is 123313302111004.

It is a cyclic number.

It is not a de Polignac number, because 400111203313321 - 2¹ = 400111203313319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400111203313301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31095156 + ... + 42037258.

It is an arithmetic number, because the mean of its divisors is an integer number (25476303785328).

Almost surely, 2^{400111203313321} is an apocalyptic number.

It is an amenable number.

400111203313321 is a deficient number, since it is larger than the sum of its proper divisors (7509657251927).

400111203313321 is a wasteful number, since it uses less digits than its factorization.

400111203313321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10944552.

The product of its (nonzero) digits is 1296, while the sum is 25.

Adding to 400111203313321 its reverse (123313302111004), we get a palindrome (523424505424325).

The spelling of 400111203313321 in words is "four hundred trillion, one hundred eleven billion, two hundred three million, three hundred thirteen thousand, three hundred twenty-one".