123133022220 has 96 divisors (see below), whose sum is σ = 390835226880. Its totient is φ = 28714417920.

The previous prime is 123133022191. The next prime is 123133022273. The reversal of 123133022220 is 22220331321.

It is a happy number.

It is a super-2 number, since 2×123133022220² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4139466 + ... + 4169105.

It is an arithmetic number, because the mean of its divisors is an integer number (4071200280).

Almost surely, 2^123133022220 is an apocalyptic number.

123133022220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123133022220 is an abundant number, since it is smaller than the sum of its proper divisors (267702204660).

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

123133022220 is a wasteful number, since it uses less digits than its factorization.

123133022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8308615 (or 8308613 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 123133022220 its reverse (22220331321), we get a palindrome (145353353541).

The spelling of 123133022220 in words is "one hundred twenty-three billion, one hundred thirty-three million, twenty-two thousand, two hundred twenty".