11111020401 has 8 divisors (see below), whose sum is σ = 15954285760. Its totient is φ = 6837550992.

The previous prime is 11111020387. The next prime is 11111020409. The reversal of 11111020401 is 10402011111.

11111020401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 11111020401 - 2⁷ = 11111020273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11111020409) 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 7 ways as a sum of consecutive naturals, for example, 142448941 + ... + 142449018.

It is an arithmetic number, because the mean of its divisors is an integer number (1994285720).

Almost surely, 2^11111020401 is an apocalyptic number.

It is an amenable number.

11111020401 is a deficient number, since it is larger than the sum of its proper divisors (4843265359).

11111020401 is a wasteful number, since it uses less digits than its factorization.

11111020401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284897975.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11111020401 its reverse (10402011111), we get a palindrome (21513031512).

The spelling of 11111020401 in words is "eleven billion, one hundred eleven million, twenty thousand, four hundred one".