1223001020 has 12 divisors (see below), whose sum is σ = 2568302184. Its totient is φ = 489200400.

The previous prime is 1223000981. The next prime is 1223001061. The reversal of 1223001020 is 201003221.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1223000992 and 1223001010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30575006 + ... + 30575045.

It is an arithmetic number, because the mean of its divisors is an integer number (214025182).

Almost surely, 2^1223001020 is an apocalyptic number.

1223001020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223001020 is an abundant number, since it is smaller than the sum of its proper divisors (1345301164).

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

1223001020 is a wasteful number, since it uses less digits than its factorization.

1223001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61150060 (or 61150058 counting only the distinct ones).

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

The square root of 1223001020 is about 34971.4314834266. The cubic root of 1223001020 is about 1069.4051545639.

Adding to 1223001020 its reverse (201003221), we get a palindrome (1424004241).

The spelling of 1223001020 in words is "one billion, two hundred twenty-three million, one thousand, twenty".