102111401 has 16 divisors (see below), whose sum is σ = 126199296. Its totient is φ = 80618496.

The previous prime is 102111397. The next prime is 102111431. The reversal of 102111401 is 104111201.

It is not a de Polignac number, because 102111401 - 2² = 102111397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (102111431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3536 + ... + 14721.

It is an arithmetic number, because the mean of its divisors is an integer number (7887456).

Almost surely, 2^102111401 is an apocalyptic number.

It is an amenable number.

102111401 is a deficient number, since it is larger than the sum of its proper divisors (24087895).

102111401 is a wasteful number, since it uses less digits than its factorization.

102111401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18328.

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 102111401 is about 10105.0186046340. The cubic root of 102111401 is about 467.4029096708.

Adding to 102111401 its reverse (104111201), we get a palindrome (206222602).

The spelling of 102111401 in words is "one hundred two million, one hundred eleven thousand, four hundred one".