123220102020 has 48 divisors (see below), whose sum is σ = 360016997760. Its totient is φ = 31430054656.

The previous prime is 123220102009. The next prime is 123220102037. The reversal of 123220102020 is 20201022321.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44643585 + ... + 44646344.

It is an arithmetic number, because the mean of its divisors is an integer number (7500354120).

Almost surely, 2^123220102020 is an apocalyptic number.

123220102020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123220102020 is an abundant number, since it is smaller than the sum of its proper divisors (236796895740).

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

123220102020 is a wasteful number, since it uses less digits than its factorization.

123220102020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89289964 (or 89289962 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 123220102020 its reverse (20201022321), we get a palindrome (143421124341).

The spelling of 123220102020 in words is "one hundred twenty-three billion, two hundred twenty million, one hundred two thousand, twenty".