1122131112221 has 8 divisors (see below), whose sum is σ = 1338193624704. Its totient is φ = 920008116720.

The previous prime is 1122131112173. The next prime is 1122131112227. The reversal of 1122131112221 is 1222111312211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1122131112221 - 2¹⁰ = 1122131111197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1122131112193 and 1122131112202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122131112227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3484879070 + ... + 3484879391.

It is an arithmetic number, because the mean of its divisors is an integer number (167274203088).

Almost surely, 2^{1122131112221} is an apocalyptic number.

It is an amenable number.

1122131112221 is a deficient number, since it is larger than the sum of its proper divisors (216062512483).

1122131112221 is an equidigital number, since it uses as much as digits as its factorization.

1122131112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6969758491.

The product of its digits is 96, while the sum is 20.

Adding to 1122131112221 its reverse (1222111312211), we get a palindrome (2344242424432).

The spelling of 1122131112221 in words is "one trillion, one hundred twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, two hundred twenty-one".