102030121123 has 4 divisors (see below), whose sum is σ = 116605852720. Its totient is φ = 87454389528.

The previous prime is 102030121111. The next prime is 102030121147. The reversal of 102030121123 is 321121030201.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 321121030201 = 177283 ⋅1811347.

It is a cyclic number.

It is not a de Polignac number, because 102030121123 - 2⁵ = 102030121091 is a prime.

It is a super-2 number, since 2×102030121123² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 102030121097 and 102030121106.

It is not an unprimeable number, because it can be changed into a prime (102030121153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7287865788 + ... + 7287865801.

It is an arithmetic number, because the mean of its divisors is an integer number (29151463180).

Almost surely, 2^102030121123 is an apocalyptic number.

102030121123 is a deficient number, since it is larger than the sum of its proper divisors (14575731597).

102030121123 is an equidigital number, since it uses as much as digits as its factorization.

102030121123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14575731596.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 102030121123 its reverse (321121030201), we get a palindrome (423151151324).

The spelling of 102030121123 in words is "one hundred two billion, thirty million, one hundred twenty-one thousand, one hundred twenty-three".