102111238143 has 8 divisors (see below), whose sum is σ = 151275908400. Its totient is φ = 68074158744.

The previous prime is 102111238121. The next prime is 102111238171. The reversal of 102111238143 is 341832111201.

It is not a de Polignac number, because 102111238143 - 2⁵ = 102111238111 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 3781897709 = 102111238143 / (1 + 0 + 2 + 1 + 1 + 1 + 2 + 3 + 8 + 1 + 4 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111231143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1890948828 + ... + 1890948881.

It is an arithmetic number, because the mean of its divisors is an integer number (18909488550).

Almost surely, 2^102111238143 is an apocalyptic number.

102111238143 is a deficient number, since it is larger than the sum of its proper divisors (49164670257).

102111238143 is an equidigital number, since it uses as much as digits as its factorization.

102111238143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3781897718 (or 3781897712 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

Adding to 102111238143 its reverse (341832111201), we get a palindrome (443943349344).

The spelling of 102111238143 in words is "one hundred two billion, one hundred eleven million, two hundred thirty-eight thousand, one hundred forty-three".