111220000221121 has 32 divisors (see below), whose sum is σ = 127797612945408. Its totient is φ = 95803026992640.

The previous prime is 111220000221053. The next prime is 111220000221131. The reversal of 111220000221121 is 121122000022111.

It is not a de Polignac number, because 111220000221121 - 2¹³ = 111220000212929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111220000221095 and 111220000221104.

It is not an unprimeable number, because it can be changed into a prime (111220000221131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 449444401 + ... + 449691793.

It is an arithmetic number, because the mean of its divisors is an integer number (3993675404544).

Almost surely, 2^{111220000221121} is an apocalyptic number.

111220000221121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111220000221121 is a deficient number, since it is larger than the sum of its proper divisors (16577612724287).

111220000221121 is a wasteful number, since it uses less digits than its factorization.

111220000221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264141.

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

Adding to 111220000221121 its reverse (121122000022111), we get a palindrome (232342000243232).

The spelling of 111220000221121 in words is "one hundred eleven trillion, two hundred twenty billion, two hundred twenty-one thousand, one hundred twenty-one".