102001021123 has 2 divisors, whose sum is σ = 102001021124. Its totient is φ = 102001021122.

The previous prime is 102001021099. The next prime is 102001021127. The reversal of 102001021123 is 321120100201.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 102001021123 - 2¹³ = 102001012931 is a prime.

It is a super-2 number, since 2×102001021123² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102001021127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51000510561 + 51000510562.

It is an arithmetic number, because the mean of its divisors is an integer number (51000510562).

Almost surely, 2^102001021123 is an apocalyptic number.

102001021123 is a deficient number, since it is larger than the sum of its proper divisors (1).

102001021123 is an equidigital number, since it uses as much as digits as its factorization.

102001021123 is an odious number, because the sum of its binary digits is odd.

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

Adding to 102001021123 its reverse (321120100201), we get a palindrome (423121121324).

The spelling of 102001021123 in words is "one hundred two billion, one million, twenty-one thousand, one hundred twenty-three".