30123132220 has 24 divisors (see below), whose sum is σ = 63395817408. Its totient is φ = 12023112000.

The previous prime is 30123132211. The next prime is 30123132251. The reversal of 30123132220 is 2223132103.

It is a congruent number.

It is an unprimeable number.

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, 1624356 + ... + 1642795.

It is an arithmetic number, because the mean of its divisors is an integer number (2641492392).

Almost surely, 2^30123132220 is an apocalyptic number.

It is an amenable number.

30123132220 is an abundant number, since it is smaller than the sum of its proper divisors (33272685188).

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

30123132220 is a wasteful number, since it uses less digits than its factorization.

30123132220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267621 (or 3267619 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 30123132220 its reverse (2223132103), we get a palindrome (32346264323).

The spelling of 30123132220 in words is "thirty billion, one hundred twenty-three million, one hundred thirty-two thousand, two hundred twenty".