1223506642311 has 24 divisors (see below), whose sum is σ = 1804572853200. Its totient is φ = 798529769856.

The previous prime is 1223506642307. The next prime is 1223506642321. The reversal of 1223506642311 is 1132466053221.

1223506642311 is a `hidden beast` number, since 1 + 2 + 2 + 3 + 5 + 0 + 6 + 642 + 3 + 1 + 1 = 666.

It is not a de Polignac number, because 1223506642311 - 2² = 1223506642307 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223506642321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2588361 + ... + 3024338.

It is an arithmetic number, because the mean of its divisors is an integer number (75190535550).

Almost surely, 2^{1223506642311} is an apocalyptic number.

1223506642311 is a deficient number, since it is larger than the sum of its proper divisors (581066210889).

1223506642311 is a wasteful number, since it uses less digits than its factorization.

1223506642311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613215 (or 5613212 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The spelling of 1223506642311 in words is "one trillion, two hundred twenty-three billion, five hundred six million, six hundred forty-two thousand, three hundred eleven".