1223250444015 has 32 divisors (see below), whose sum is σ = 1959016429056. Its totient is φ = 651795258240.

The previous prime is 1223250443993. The next prime is 1223250444029. The reversal of 1223250444015 is 5104440523221.

It is not a de Polignac number, because 1223250444015 - 2⁶ = 1223250443951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 140971857 + ... + 140980533.

It is an arithmetic number, because the mean of its divisors is an integer number (61219263408).

Almost surely, 2^{1223250444015} is an apocalyptic number.

1223250444015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223250444015 is a deficient number, since it is larger than the sum of its proper divisors (735765985041).

1223250444015 is a wasteful number, since it uses less digits than its factorization.

1223250444015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16319.

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 1223250444015 its reverse (5104440523221), we get a palindrome (6327690967236).

The spelling of 1223250444015 in words is "one trillion, two hundred twenty-three billion, two hundred fifty million, four hundred forty-four thousand, fifteen".