30123012220 has 24 divisors (see below), whose sum is σ = 72295229664. Its totient is φ = 10327889856.

The previous prime is 30123012217. The next prime is 30123012223. The reversal of 30123012220 is 2221032103.

It is an interprime number because it is at equal distance from previous prime (30123012217) and next prime (30123012223).

It is a junction number, because it is equal to n+sod(n) for n = 30123012194 and 30123012203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30123012223) 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 7 ways as a sum of consecutive naturals, for example, 107582047 + ... + 107582326.

It is an arithmetic number, because the mean of its divisors is an integer number (3012301236).

Almost surely, 2^30123012220 is an apocalyptic number.

It is an amenable number.

30123012220 is an abundant number, since it is smaller than the sum of its proper divisors (42172217444).

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

30123012220 is a wasteful number, since it uses less digits than its factorization.

30123012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215164389 (or 215164387 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 30123012220 its reverse (2221032103), we get a palindrome (32344044323).

The spelling of 30123012220 in words is "thirty billion, one hundred twenty-three million, twelve thousand, two hundred twenty".