1203123133129 has 8 divisors (see below), whose sum is σ = 1218516755400. Its totient is φ = 1187797776000.

The previous prime is 1203123133127. The next prime is 1203123133229. The reversal of 1203123133129 is 9213313213021.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 846672341904 + 356450791225 = 920148^2 + 597035^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1203123133129 - 2¹ = 1203123133127 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1203123133129.

It is not an unprimeable number, because it can be changed into a prime (1203123133127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17030812 + ... + 17101309.

It is an arithmetic number, because the mean of its divisors is an integer number (152314594425).

Almost surely, 2^{1203123133129} is an apocalyptic number.

It is an amenable number.

1203123133129 is a deficient number, since it is larger than the sum of its proper divisors (15393622271).

1203123133129 is a wasteful number, since it uses less digits than its factorization.

1203123133129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34132571.

The product of its (nonzero) digits is 5832, while the sum is 31.

The spelling of 1203123133129 in words is "one trillion, two hundred three billion, one hundred twenty-three million, one hundred thirty-three thousand, one hundred twenty-nine".