2112221121011 has 4 divisors (see below), whose sum is σ = 2112229393800. Its totient is φ = 2112212848224.

The previous prime is 2112221120969. The next prime is 2112221121041. The reversal of 2112221121011 is 1101211222112.

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 2112221121011 - 2¹⁴ = 2112221104627 is a prime.

It is a super-2 number, since 2×2112221121011² (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 (2112221121041) 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, 3740801 + ... + 4268258.

It is an arithmetic number, because the mean of its divisors is an integer number (528057348450).

Almost surely, 2^{2112221121011} is an apocalyptic number.

2112221121011 is a deficient number, since it is larger than the sum of its proper divisors (8272789).

2112221121011 is an equidigital number, since it uses as much as digits as its factorization.

2112221121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8272788.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 2112221121011 its reverse (1101211222112), we get a palindrome (3213432343123).

The spelling of 2112221121011 in words is "two trillion, one hundred twelve billion, two hundred twenty-one million, one hundred twenty-one thousand, eleven".