102123203401 has 2 divisors, whose sum is σ = 102123203402. Its totient is φ = 102123203400.

The previous prime is 102123203387. The next prime is 102123203431. The reversal of 102123203401 is 104302321201.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 98947993600 + 3175209801 = 314560^2 + 56349^2 .

It is a cyclic number.

It is not a de Polignac number, because 102123203401 - 2⁹ = 102123202889 is a prime.

It is not a weakly prime, because it can be changed into another prime (102123203431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51061601700 + 51061601701.

It is an arithmetic number, because the mean of its divisors is an integer number (51061601701).

Almost surely, 2^102123203401 is an apocalyptic number.

It is an amenable number.

102123203401 is a deficient number, since it is larger than the sum of its proper divisors (1).

102123203401 is an equidigital number, since it uses as much as digits as its factorization.

102123203401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 102123203401 its reverse (104302321201), we get a palindrome (206425524602).

The spelling of 102123203401 in words is "one hundred two billion, one hundred twenty-three million, two hundred three thousand, four hundred one".