30302220123 has 20 divisors (see below), whose sum is σ = 51732891760. Its totient is φ = 17315554032.

The previous prime is 30302220059. The next prime is 30302220139. The reversal of 30302220123 is 32102220303.

It is a happy number.

It is not a de Polignac number, because 30302220123 - 2⁶ = 30302220059 is a prime.

It is a super-2 number, since 2×30302220123² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30302220096 and 30302220105.

It is not an unprimeable number, because it can be changed into a prime (30302222123) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26720968 + ... + 26722101.

It is an arithmetic number, because the mean of its divisors is an integer number (2586644588).

Almost surely, 2^30302220123 is an apocalyptic number.

30302220123 is a deficient number, since it is larger than the sum of its proper divisors (21430671637).

30302220123 is an equidigital number, since it uses as much as digits as its factorization.

30302220123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53443088 (or 53443079 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 30302220123 its reverse (32102220303), we get a palindrome (62404440426).

The spelling of 30302220123 in words is "thirty billion, three hundred two million, two hundred twenty thousand, one hundred twenty-three".