2131223012204 has 144 divisors (see below), whose sum is σ = 4488593030208. Its totient is φ = 879352320000.

The previous prime is 2131223012179. The next prime is 2131223012221. The reversal of 2131223012204 is 4022103221312.

It is a super-2 number, since 2×2131223012204² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2131223012204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 179133584 + ... + 179145480.

It is an arithmetic number, because the mean of its divisors is an integer number (31170784932).

Almost surely, 2^{2131223012204} is an apocalyptic number.

It is an amenable number.

2131223012204 is an abundant number, since it is smaller than the sum of its proper divisors (2357370018004).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131223012204 is a wasteful number, since it uses less digits than its factorization.

2131223012204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12408 (or 12395 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 2131223012204 its reverse (4022103221312), we get a palindrome (6153326233516).

The spelling of 2131223012204 in words is "two trillion, one hundred thirty-one billion, two hundred twenty-three million, twelve thousand, two hundred four".