1112120222021 has 2 divisors, whose sum is σ = 1112120222022. Its totient is φ = 1112120222020.

The previous prime is 1112120221973. The next prime is 1112120222071. The reversal of 1112120222021 is 1202220212111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 607018624996 + 505101597025 = 779114^2 + 710705^2 .

It is an emirp because it is prime and its reverse (1202220212111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1112120222021 - 2⁶ = 1112120221957 is a prime.

It is a super-2 number, since 2×1112120222021² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112120222071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556060111010 + 556060111011.

It is an arithmetic number, because the mean of its divisors is an integer number (556060111011).

Almost surely, 2^{1112120222021} is an apocalyptic number.

It is an amenable number.

1112120222021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112120222021 is an equidigital number, since it uses as much as digits as its factorization.

1112120222021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1112120222021 its reverse (1202220212111), we get a palindrome (2314340434132).

The spelling of 1112120222021 in words is "one trillion, one hundred twelve billion, one hundred twenty million, two hundred twenty-two thousand, twenty-one".