102443213401 has 16 divisors (see below), whose sum is σ = 106737699600. Its totient is φ = 98236569600.

The previous prime is 102443213393. The next prime is 102443213417. The reversal of 102443213401 is 104312344201.

It can be written as a sum of positive squares in 8 ways, for example, as 73794265801 + 28648947600 = 271651^2 + 169260^2 .

It is a cyclic number.

It is not a de Polignac number, because 102443213401 - 2³ = 102443213393 is a prime.

It is a super-2 number, since 2×102443213401² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102443213441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3710235 + ... + 3737743.

It is an arithmetic number, because the mean of its divisors is an integer number (6671106225).

Almost surely, 2^102443213401 is an apocalyptic number.

It is an amenable number.

102443213401 is a deficient number, since it is larger than the sum of its proper divisors (4294486199).

102443213401 is a wasteful number, since it uses less digits than its factorization.

102443213401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29100.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 102443213401 its reverse (104312344201), we get a palindrome (206755557602).

It can be divided in two parts, 102443 and 213401, that added together give a square (315844 = 562²).

The spelling of 102443213401 in words is "one hundred two billion, four hundred forty-three million, two hundred thirteen thousand, four hundred one".