123222020 has 24 divisors (see below), whose sum is σ = 261332568. Its totient is φ = 48800000.

The previous prime is 123222019. The next prime is 123222023. The reversal of 123222020 is 20222321.

It can be written as a sum of positive squares in 4 ways, for example, as 50495236 + 72726784 = 7106^2 + 8528^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123221986 and 123222004.

It is not an unprimeable number, because it can be changed into a prime (123222023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28481 + ... + 32520.

It is an arithmetic number, because the mean of its divisors is an integer number (10888857).

Almost surely, 2^123222020 is an apocalyptic number.

123222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123222020 is an abundant number, since it is smaller than the sum of its proper divisors (138110548).

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

123222020 is a wasteful number, since it uses less digits than its factorization.

123222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61111 (or 61109 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 123222020 is about 11100.5414282367. The cubic root of 123222020 is about 497.6180304619.

Adding to 123222020 its reverse (20222321), we get a palindrome (143444341).

The spelling of 123222020 in words is "one hundred twenty-three million, two hundred twenty-two thousand, twenty".