1223001011 has 8 divisors (see below), whose sum is σ = 1278251520. Its totient is φ = 1167923592.

The previous prime is 1223000981. The next prime is 1223001061. The reversal of 1223001011 is 1101003221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223001011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1223000983 and 1223001001.

It is not an unprimeable number, because it can be changed into a prime (1223001061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28715 + ... + 57188.

It is an arithmetic number, because the mean of its divisors is an integer number (159781440).

Almost surely, 2^1223001011 is an apocalyptic number.

1223001011 is a deficient number, since it is larger than the sum of its proper divisors (55250509).

1223001011 is an equidigital number, since it uses as much as digits as its factorization.

1223001011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86545.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1223001011 is about 34971.4313547501. The cubic root of 1223001011 is about 1069.4051519407.

Adding to 1223001011 its reverse (1101003221), we get a palindrome (2324004232).

The spelling of 1223001011 in words is "one billion, two hundred twenty-three million, one thousand, eleven".