1220010023 has 4 divisors (see below), whose sum is σ = 1221518880. Its totient is φ = 1218501168.

The previous prime is 1220009993. The next prime is 1220010059. The reversal of 1220010023 is 3200100221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220010023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1220009986 and 1220010013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220010073) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753215 + ... + 754832.

It is an arithmetic number, because the mean of its divisors is an integer number (305379720).

Almost surely, 2^1220010023 is an apocalyptic number.

1220010023 is a deficient number, since it is larger than the sum of its proper divisors (1508857).

1220010023 is an equidigital number, since it uses as much as digits as its factorization.

1220010023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508856.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1220010023 is about 34928.6418716789. The cubic root of 1220010023 is about 1068.5326563358.

Adding to 1220010023 its reverse (3200100221), we get a palindrome (4420110244).

The spelling of 1220010023 in words is "one billion, two hundred twenty million, ten thousand, twenty-three".