2211201312 has 48 divisors (see below), whose sum is σ = 5814244800. Its totient is φ = 735817472.

The previous prime is 2211201283. The next prime is 2211201313. The reversal of 2211201312 is 2131021122.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×2211201312² = 9778822484381042688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2211201291 and 2211201300.

It is not an unprimeable number, because it can be changed into a prime (2211201313) 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, 38278 + ... + 76730.

It is an arithmetic number, because the mean of its divisors is an integer number (121130100).

Almost surely, 2^2211201312 is an apocalyptic number.

It is an amenable number.

2211201312 is an abundant number, since it is smaller than the sum of its proper divisors (3603043488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2211201312 is a wasteful number, since it uses less digits than its factorization.

2211201312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39065 (or 39057 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 2211201312 is about 47023.4123814935. The cubic root of 2211201312 is about 1302.7950340286.

Adding to 2211201312 its reverse (2131021122), we get a palindrome (4342222434).

The spelling of 2211201312 in words is "two billion, two hundred eleven million, two hundred one thousand, three hundred twelve".