2012221323011 has 4 divisors (see below), whose sum is σ = 2012708665800. Its totient is φ = 2011733980224.

The previous prime is 2012221323001. The next prime is 2012221323041. The reversal of 2012221323011 is 1103231222102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2012221323011 - 2³⁴ = 1995041453827 is a prime.

It is a super-2 number, since 2×2012221323011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2012221323001) 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, 243665201 + ... + 243673458.

It is an arithmetic number, because the mean of its divisors is an integer number (503177166450).

Almost surely, 2^{2012221323011} is an apocalyptic number.

2012221323011 is a deficient number, since it is larger than the sum of its proper divisors (487342789).

2012221323011 is an equidigital number, since it uses as much as digits as its factorization.

2012221323011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487342788.

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

Adding to 2012221323011 its reverse (1103231222102), we get a palindrome (3115452545113).

The spelling of 2012221323011 in words is "two trillion, twelve billion, two hundred twenty-one million, three hundred twenty-three thousand, eleven".