1121012102221 has 16 divisors (see below), whose sum is σ = 1287959999040. Its totient is φ = 964959937920.

The previous prime is 1121012102219. The next prime is 1121012102291. The reversal of 1121012102221 is 1222012101211.

It is not a de Polignac number, because 1121012102221 - 2¹ = 1121012102219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121012102195 and 1121012102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121012102291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1002090 + ... + 1801723.

It is an arithmetic number, because the mean of its divisors is an integer number (80497499940).

Almost surely, 2^{1121012102221} is an apocalyptic number.

1121012102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121012102221 is a deficient number, since it is larger than the sum of its proper divisors (166947896819).

1121012102221 is a wasteful number, since it uses less digits than its factorization.

1121012102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2805756.

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

Adding to 1121012102221 its reverse (1222012101211), we get a palindrome (2343024203432).

The spelling of 1121012102221 in words is "one trillion, one hundred twenty-one billion, twelve million, one hundred two thousand, two hundred twenty-one".