102501772123 has 2 divisors, whose sum is σ = 102501772124. Its totient is φ = 102501772122.

The previous prime is 102501772117. The next prime is 102501772141. The reversal of 102501772123 is 321277105201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102501772123 - 2⁵ = 102501772091 is a prime.

It is a super-2 number, since 2×102501772123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102501772183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51250886061 + 51250886062.

It is an arithmetic number, because the mean of its divisors is an integer number (51250886062).

Almost surely, 2^102501772123 is an apocalyptic number.

102501772123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102501772123 is an equidigital number, since it uses as much as digits as its factorization.

102501772123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5880, while the sum is 31.

Adding to 102501772123 its reverse (321277105201), we get a palindrome (423778877324).

The spelling of 102501772123 in words is "one hundred two billion, five hundred one million, seven hundred seventy-two thousand, one hundred twenty-three".