1121113321221 has 16 divisors (see below), whose sum is σ = 1535578174784. Its totient is φ = 727038146304.

The previous prime is 1121113321219. The next prime is 1121113321231. The reversal of 1121113321221 is 1221233111211.

It is not a de Polignac number, because 1121113321221 - 2¹ = 1121113321219 is a prime.

It is a super-2 number, since 2×1121113321221² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121113321231) 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 15 ways as a sum of consecutive naturals, for example, 707551 + ... + 1656156.

It is an arithmetic number, because the mean of its divisors is an integer number (95973635924).

Almost surely, 2^{1121113321221} is an apocalyptic number.

It is an amenable number.

1121113321221 is a deficient number, since it is larger than the sum of its proper divisors (414464853563).

1121113321221 is a wasteful number, since it uses less digits than its factorization.

1121113321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368020.

The product of its digits is 144, while the sum is 21.

Adding to 1121113321221 its reverse (1221233111211), we get a palindrome (2342346432432).

The spelling of 1121113321221 in words is "one trillion, one hundred twenty-one billion, one hundred thirteen million, three hundred twenty-one thousand, two hundred twenty-one".