1121220105 has 8 divisors (see below), whose sum is σ = 1793952192. Its totient is φ = 597984048.

The previous prime is 1121220103. The next prime is 1121220157. The reversal of 1121220105 is 5010221211.

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

It is not a de Polignac number, because 1121220105 - 2¹ = 1121220103 is a prime.

It is a super-2 number, since 2×1121220105² = 2514269047712422050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 74748007 = 1121220105 / (1 + 1 + 2 + 1 + 2 + 2 + 0 + 1 + 0 + 5).

It is not an unprimeable number, because it can be changed into a prime (1121220101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37373989 + ... + 37374018.

It is an arithmetic number, because the mean of its divisors is an integer number (224244024).

Almost surely, 2^1121220105 is an apocalyptic number.

1121220105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1121220105 is a deficient number, since it is larger than the sum of its proper divisors (672732087).

1121220105 is an equidigital number, since it uses as much as digits as its factorization.

1121220105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74748015.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1121220105 is about 33484.6249045737. The cubic root of 1121220105 is about 1038.8757899452.

Adding to 1121220105 its reverse (5010221211), we get a palindrome (6131441316).

The spelling of 1121220105 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, one hundred five".