30102123123 has 32 divisors (see below), whose sum is σ = 45654530880. Its totient is φ = 19597075200.

The previous prime is 30102123119. The next prime is 30102123127. The reversal of 30102123123 is 32132120103.

It is an interprime number because it is at equal distance from previous prime (30102123119) and next prime (30102123127).

It is not a de Polignac number, because 30102123123 - 2² = 30102123119 is a prime.

It is a super-2 number, since 2×30102123123² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 30102123096 and 30102123105.

It is not an unprimeable number, because it can be changed into a prime (30102123127) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 123465 + ... + 274677.

It is an arithmetic number, because the mean of its divisors is an integer number (1426704090).

Almost surely, 2^30102123123 is an apocalyptic number.

30102123123 is a deficient number, since it is larger than the sum of its proper divisors (15552407757).

30102123123 is a wasteful number, since it uses less digits than its factorization.

30102123123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151396 (or 151390 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 30102123123 its reverse (32132120103), we get a palindrome (62234243226).

The spelling of 30102123123 in words is "thirty billion, one hundred two million, one hundred twenty-three thousand, one hundred twenty-three".