2011221221324 has 24 divisors (see below), whose sum is σ = 4022484254880. Its totient is φ = 861942992256.

The previous prime is 2011221221323. The next prime is 2011221221393. The reversal of 2011221221324 is 4231221221102.

It is a super-2 number, since 2×2011221221324² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2011221221324.

It is not an unprimeable number, because it can be changed into a prime (2011221221323) 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, 2859632 + ... + 3492840.

It is an arithmetic number, because the mean of its divisors is an integer number (167603510620).

Almost surely, 2^{2011221221324} is an apocalyptic number.

It is an amenable number.

2011221221324 is an abundant number, since it is smaller than the sum of its proper divisors (2011263033556).

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

2011221221324 is a wasteful number, since it uses less digits than its factorization.

2011221221324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746657 (or 746655 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 2011221221324 its reverse (4231221221102), we get a palindrome (6242442442426).

The spelling of 2011221221324 in words is "two trillion, eleven billion, two hundred twenty-one million, two hundred twenty-one thousand, three hundred twenty-four".