400203221021111 has 8 divisors (see below), whose sum is σ = 402522142668480. Its totient is φ = 397884363836512.

The previous prime is 400203221021047. The next prime is 400203221021113. The reversal of 400203221021111 is 111120122302004.

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 400203221021111 - 2⁶ = 400203221021047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400203221021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635231 + ... + 28524048.

It is an arithmetic number, because the mean of its divisors is an integer number (50315267833560).

Almost surely, 2^{400203221021111} is an apocalyptic number.

400203221021111 is a deficient number, since it is larger than the sum of its proper divisors (2318921647369).

400203221021111 is a wasteful number, since it uses less digits than its factorization.

400203221021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32231385.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 400203221021111 its reverse (111120122302004), we get a palindrome (511323343323115).

The spelling of 400203221021111 in words is "four hundred trillion, two hundred three billion, two hundred twenty-one million, twenty-one thousand, one hundred eleven".