102143400212 has 18 divisors (see below), whose sum is σ = 207934779402. Its totient is φ = 43775742864.

The previous prime is 102143400211. The next prime is 102143400239. The reversal of 102143400212 is 212004341201.

It can be written as a sum of positive squares in only one way, i.e., 88806384016 + 13337016196 = 298004^2 + 115486^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102143400211) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 260569703 + ... + 260570094.

It is an arithmetic number, because the mean of its divisors is an integer number (11551932189).

Almost surely, 2^102143400212 is an apocalyptic number.

It is an amenable number.

102143400212 is an abundant number, since it is smaller than the sum of its proper divisors (105791379190).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102143400212 is a wasteful number, since it uses less digits than its factorization.

102143400212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 521139815 (or 521139806 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 102143400212 its reverse (212004341201), we get a palindrome (314147741413).

The spelling of 102143400212 in words is "one hundred two billion, one hundred forty-three million, four hundred thousand, two hundred twelve".