20123133330 has 48 divisors (see below), whose sum is σ = 49502313792. Its totient is φ = 5235273600.

The previous prime is 20123133313. The next prime is 20123133341. The reversal of 20123133330 is 3333132102.

It is a junction number, because it is equal to n+sod(n) for n = 20123133297 and 20123133306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149086 + ... + 249945.

It is an arithmetic number, because the mean of its divisors is an integer number (1031298204).

Almost surely, 2^20123133330 is an apocalyptic number.

20123133330 is an abundant number, since it is smaller than the sum of its proper divisors (29379180462).

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

20123133330 is a wasteful number, since it uses less digits than its factorization.

20123133330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399123 (or 399082 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 21.

Adding to 20123133330 its reverse (3333132102), we get a palindrome (23456265432).

The spelling of 20123133330 in words is "twenty billion, one hundred twenty-three million, one hundred thirty-three thousand, three hundred thirty".