2012221313 has 4 divisors (see below), whose sum is σ = 2012532480. Its totient is φ = 2011910148.

The previous prime is 2012221307. The next prime is 2012221327. The reversal of 2012221313 is 3131222102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012221313 is a prime.

It is a super-3 number, since 3×2012221313³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012221291 and 2012221300.

It is not an unprimeable number, because it can be changed into a prime (2012221363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145673 + ... + 158886.

It is an arithmetic number, because the mean of its divisors is an integer number (503133120).

Almost surely, 2^2012221313 is an apocalyptic number.

It is an amenable number.

2012221313 is a deficient number, since it is larger than the sum of its proper divisors (311167).

2012221313 is an equidigital number, since it uses as much as digits as its factorization.

2012221313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311166.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2012221313 is about 44857.7898809114. The cubic root of 2012221313 is about 1262.4821551966.

Adding to 2012221313 its reverse (3131222102), we get a palindrome (5143443415).

The spelling of 2012221313 in words is "two billion, twelve million, two hundred twenty-one thousand, three hundred thirteen".