1211122030312 has 16 divisors (see below), whose sum is σ = 2301961394340. Its totient is φ = 597265658496.

The previous prime is 1211122030309. The next prime is 1211122030333. The reversal of 1211122030312 is 2130302211121.

It can be written as a sum of positive squares in 2 ways, for example, as 1168444254916 + 42677775396 = 1080946^2 + 206586^2 .

It is a super-2 number, since 2×1211122030312² (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 1211122030312.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1036918963 + ... + 1036920130.

Almost surely, 2^{1211122030312} is an apocalyptic number.

It is an amenable number.

1211122030312 is a deficient number, since it is larger than the sum of its proper divisors (1090839364028).

1211122030312 is a wasteful number, since it uses less digits than its factorization.

1211122030312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2073839172 (or 2073839168 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211122030312 its reverse (2130302211121), we get a palindrome (3341424241433).

The spelling of 1211122030312 in words is "one trillion, two hundred eleven billion, one hundred twenty-two million, thirty thousand, three hundred twelve".