1211203301123 has 8 divisors (see below), whose sum is σ = 1218233882448. Its totient is φ = 1204173058144.

The previous prime is 1211203301071. The next prime is 1211203301129. The reversal of 1211203301123 is 3211033021121.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1211203301123 is a prime.

It is a super-2 number, since 2×1211203301123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1211203301095 and 1211203301104.

It is not an unprimeable number, because it can be changed into a prime (1211203301129) 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, 12530165 + ... + 12626457.

It is an arithmetic number, because the mean of its divisors is an integer number (152279235306).

Almost surely, 2^{1211203301123} is an apocalyptic number.

1211203301123 is a deficient number, since it is larger than the sum of its proper divisors (7030581325).

1211203301123 is an equidigital number, since it uses as much as digits as its factorization.

1211203301123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169173.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1211203301123 its reverse (3211033021121), we get a palindrome (4422236322244).

It can be divided in two parts, 121120 and 3301123, that added together give a palindrome (3422243).

The spelling of 1211203301123 in words is "one trillion, two hundred eleven billion, two hundred three million, three hundred one thousand, one hundred twenty-three".