2211221201312 has 24 divisors (see below), whose sum is σ = 4357009331136. Its totient is φ = 1104679148992.

The previous prime is 2211221201311. The next prime is 2211221201353. The reversal of 2211221201312 is 2131021221122.

It is a super-2 number, since 2×2211221201312² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2211221201311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29069288 + ... + 29145255.

It is an arithmetic number, because the mean of its divisors is an integer number (181542055464).

Almost surely, 2^{2211221201312} is an apocalyptic number.

It is an amenable number.

2211221201312 is a deficient number, since it is larger than the sum of its proper divisors (2145788129824).

2211221201312 is a wasteful number, since it uses less digits than its factorization.

2211221201312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58215740 (or 58215732 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 2211221201312 its reverse (2131021221122), we get a palindrome (4342242422434).

The spelling of 2211221201312 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred one thousand, three hundred twelve".