102002011123 has 2 divisors, whose sum is σ = 102002011124. Its totient is φ = 102002011122.

The previous prime is 102002011087. The next prime is 102002011207. The reversal of 102002011123 is 321110200201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102002011123 - 2²¹ = 101999913971 is a prime.

It is a super-2 number, since 2×102002011123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102002015123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51001005561 + 51001005562.

It is an arithmetic number, because the mean of its divisors is an integer number (51001005562).

Almost surely, 2^102002011123 is an apocalyptic number.

102002011123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102002011123 is an equidigital number, since it uses as much as digits as its factorization.

102002011123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 102002011123 its reverse (321110200201), we get a palindrome (423112211324).

The spelling of 102002011123 in words is "one hundred two billion, two million, eleven thousand, one hundred twenty-three".