1223122402004 has 6 divisors (see below), whose sum is σ = 2140464203514. Its totient is φ = 611561201000.

The previous prime is 1223122402001. The next prime is 1223122402009. The reversal of 1223122402004 is 4002042213221.

It can be written as a sum of positive squares in only one way, i.e., 1215171113104 + 7951288900 = 1102348^2 + 89170^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223122402001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152890300247 + ... + 152890300254.

It is an arithmetic number, because the mean of its divisors is an integer number (356744033919).

Almost surely, 2^{1223122402004} is an apocalyptic number.

It is an amenable number.

1223122402004 is a deficient number, since it is larger than the sum of its proper divisors (917341801510).

1223122402004 is a wasteful number, since it uses less digits than its factorization.

1223122402004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305780600505 (or 305780600503 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 1223122402004 its reverse (4002042213221), we get a palindrome (5225164615225).

The spelling of 1223122402004 in words is "one trillion, two hundred twenty-three billion, one hundred twenty-two million, four hundred two thousand, four".