1211220032312 has 32 divisors (see below), whose sum is σ = 2273920128000. Its totient is φ = 604841637600.

The previous prime is 1211220032279. The next prime is 1211220032317. The reversal of 1211220032312 is 2132300221121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211220032317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37262387 + ... + 37294877.

It is an arithmetic number, because the mean of its divisors is an integer number (71060004000).

Almost surely, 2^{1211220032312} is an apocalyptic number.

It is an amenable number.

1211220032312 is a deficient number, since it is larger than the sum of its proper divisors (1062700095688).

1211220032312 is a wasteful number, since it uses less digits than its factorization.

1211220032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38267 (or 38263 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1211220032312 its reverse (2132300221121), we get a palindrome (3343520253433).

The spelling of 1211220032312 in words is "one trillion, two hundred eleven billion, two hundred twenty million, thirty-two thousand, three hundred twelve".