1223171015 has 8 divisors (see below), whose sum is σ = 1601242128. Its totient is φ = 889578880.

The previous prime is 1223171003. The next prime is 1223171017. The reversal of 1223171015 is 5101713221.

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

It is not a de Polignac number, because 1223171015 - 2⁶ = 1223170951 is a prime.

It is a super-2 number, since 2×1223171015² = 2992294663872260450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223171017) 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, 11119682 + ... + 11119791.

It is an arithmetic number, because the mean of its divisors is an integer number (200155266).

Almost surely, 2^1223171015 is an apocalyptic number.

1223171015 is a deficient number, since it is larger than the sum of its proper divisors (378071113).

1223171015 is a wasteful number, since it uses less digits than its factorization.

1223171015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22239489.

The product of its (nonzero) digits is 420, while the sum is 23.

The square root of 1223171015 is about 34973.8618828404. The cubic root of 1223171015 is about 1069.4547007496.

Adding to 1223171015 its reverse (5101713221), we get a palindrome (6324884236).

The spelling of 1223171015 in words is "one billion, two hundred twenty-three million, one hundred seventy-one thousand, fifteen".