211110023401 has 4 divisors (see below), whose sum is σ = 216259048404. Its totient is φ = 205960998400.

The previous prime is 211110023393. The next prime is 211110023413. The reversal of 211110023401 is 104320011112.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 30060624400 + 181049399001 = 173380^2 + 425499^2 .

It is a cyclic number.

It is not a de Polignac number, because 211110023401 - 2³ = 211110023393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211110023431) 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 3 ways as a sum of consecutive naturals, for example, 2574512440 + ... + 2574512521.

It is an arithmetic number, because the mean of its divisors is an integer number (54064762101).

Almost surely, 2^211110023401 is an apocalyptic number.

It is an amenable number.

211110023401 is a deficient number, since it is larger than the sum of its proper divisors (5149025003).

211110023401 is an equidigital number, since it uses as much as digits as its factorization.

211110023401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149025002.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 211110023401 its reverse (104320011112), we get a palindrome (315430034513).

The spelling of 211110023401 in words is "two hundred eleven billion, one hundred ten million, twenty-three thousand, four hundred one".