1122111020221 has 4 divisors (see below), whose sum is σ = 1123845350112. Its totient is φ = 1120376690332.

The previous prime is 1122111020213. The next prime is 1122111020237. The reversal of 1122111020221 is 1220201112211.

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 not a de Polignac number, because 1122111020221 - 2³ = 1122111020213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122111020195 and 1122111020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122111020291) 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 3 ways as a sum of consecutive naturals, for example, 867163975 + ... + 867165268.

It is an arithmetic number, because the mean of its divisors is an integer number (280961337528).

Almost surely, 2^{1122111020221} is an apocalyptic number.

It is an amenable number.

1122111020221 is a deficient number, since it is larger than the sum of its proper divisors (1734329891).

1122111020221 is an equidigital number, since it uses as much as digits as its factorization.

1122111020221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734329890.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1122111020221 its reverse (1220201112211), we get a palindrome (2342312132432).

The spelling of 1122111020221 in words is "one trillion, one hundred twenty-two billion, one hundred eleven million, twenty thousand, two hundred twenty-one".