1210220123 has 16 divisors (see below), whose sum is σ = 1465781184. Its totient is φ = 975436800.

The previous prime is 1210220111. The next prime is 1210220159. The reversal of 1210220123 is 3210220121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1210220123 - 2⁴ = 1210220107 is a prime.

It is a super-2 number, since 2×1210220123² = 2929265492228270258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1210220098 and 1210220107.

It is not an unprimeable number, because it can be changed into a prime (1210220723) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150911 + ... + 158727.

It is an arithmetic number, because the mean of its divisors is an integer number (91611324).

Almost surely, 2^1210220123 is an apocalyptic number.

1210220123 is a deficient number, since it is larger than the sum of its proper divisors (255561061).

1210220123 is a wasteful number, since it uses less digits than its factorization.

1210220123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9142.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1210220123 is about 34788.2181636255. The cubic root of 1210220123 is about 1065.6668509095. Note that the first 3 decimals are identical.

Adding to 1210220123 its reverse (3210220121), we get a palindrome (4420440244).

The spelling of 1210220123 in words is "one billion, two hundred ten million, two hundred twenty thousand, one hundred twenty-three".