30123241220 has 48 divisors (see below), whose sum is σ = 66913499520. Its totient is φ = 11367518976.

The previous prime is 30123241219. The next prime is 30123241223. The reversal of 30123241220 is 2214232103.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 30123241192 and 30123241201.

It is not an unprimeable number, because it can be changed into a prime (30123241223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414950 + ... + 482109.

It is an arithmetic number, because the mean of its divisors is an integer number (1394031240).

Almost surely, 2^30123241220 is an apocalyptic number.

It is an amenable number.

30123241220 is an abundant number, since it is smaller than the sum of its proper divisors (36790258300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30123241220 is a wasteful number, since it uses less digits than its factorization.

30123241220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 897164 (or 897162 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 30123241220 its reverse (2214232103), we get a palindrome (32337473323).

The spelling of 30123241220 in words is "thirty billion, one hundred twenty-three million, two hundred forty-one thousand, two hundred twenty".