1243121102204 has 12 divisors (see below), whose sum is σ = 2176017346104. Its totient is φ = 621401860464.

The previous prime is 1243121102183. The next prime is 1243121102281. The reversal of 1243121102204 is 4022011213421.

It is a self number, because there is not a number n which added to its sum of digits gives 1243121102204.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 39655034 + ... + 39686369.

It is an arithmetic number, because the mean of its divisors is an integer number (181334778842).

Almost surely, 2^{1243121102204} is an apocalyptic number.

It is an amenable number.

1243121102204 is a deficient number, since it is larger than the sum of its proper divisors (932896243900).

1243121102204 is a wasteful number, since it uses less digits than its factorization.

1243121102204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79345324 (or 79345322 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 1243121102204 its reverse (4022011213421), we get a palindrome (5265132315625).

The spelling of 1243121102204 in words is "one trillion, two hundred forty-three billion, one hundred twenty-one million, one hundred two thousand, two hundred four".