10123223220 has 144 divisors (see below), whose sum is σ = 34955286912. Its totient is φ = 2347403520.

The previous prime is 10123223207. The next prime is 10123223221. The reversal of 10123223220 is 2232232101.

10123223220 is a `hidden beast` number, since 10 + 12 + 322 + 322 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10123223193 and 10123223202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123223221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65607 + ... + 156686.

It is an arithmetic number, because the mean of its divisors is an integer number (242745048).

Almost surely, 2^10123223220 is an apocalyptic number.

10123223220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10123223220 is an abundant number, since it is smaller than the sum of its proper divisors (24832063692).

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

10123223220 is a wasteful number, since it uses less digits than its factorization.

10123223220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222342 (or 222337 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 10123223220 its reverse (2232232101), we get a palindrome (12355455321).

The spelling of 10123223220 in words is "ten billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred twenty".