102111444401 has 4 divisors (see below), whose sum is σ = 108117999972. Its totient is φ = 96104888832.

The previous prime is 102111444397. The next prime is 102111444419. The reversal of 102111444401 is 104444111201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104444111201 = 79087 ⋅1320623.

It can be written as a sum of positive squares in 2 ways, for example, as 83581701025 + 18529743376 = 289105^2 + 136124^2 .

It is a cyclic number.

It is not a de Polignac number, because 102111444401 - 2² = 102111444397 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102111444481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003277760 + ... + 3003277793.

It is an arithmetic number, because the mean of its divisors is an integer number (27029499993).

Almost surely, 2^102111444401 is an apocalyptic number.

It is an amenable number.

102111444401 is a deficient number, since it is larger than the sum of its proper divisors (6006555571).

102111444401 is an equidigital number, since it uses as much as digits as its factorization.

102111444401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6006555570.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 102111444401 its reverse (104444111201), we get a palindrome (206555555602).

The spelling of 102111444401 in words is "one hundred two billion, one hundred eleven million, four hundred forty-four thousand, four hundred one".