1223250444135 has 48 divisors (see below), whose sum is σ = 2199580490016. Its totient is φ = 652177692288.

The previous prime is 1223250444131. The next prime is 1223250444139. The reversal of 1223250444135 is 5314440523221.

It is a happy number.

1223250444135 is a `hidden beast` number, since 1 + 2 + 2 + 32 + 50 + 444 + 135 = 666.

It is an interprime number because it is at equal distance from previous prime (1223250444131) and next prime (1223250444139).

It is not a de Polignac number, because 1223250444135 - 2² = 1223250444131 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1223250444135.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223250444131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3422517 + ... + 3762993.

It is an arithmetic number, because the mean of its divisors is an integer number (45824593542).

Almost surely, 2^{1223250444135} is an apocalyptic number.

1223250444135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1223250444135 is a deficient number, since it is larger than the sum of its proper divisors (976330045881).

1223250444135 is an equidigital number, since it uses as much as digits as its factorization.

1223250444135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343454 (or 343442 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 36.

Adding to 1223250444135 its reverse (5314440523221), we get a palindrome (6537690967356).

The spelling of 1223250444135 in words is "one trillion, two hundred twenty-three billion, two hundred fifty million, four hundred forty-four thousand, one hundred thirty-five".