1121011220105 has 16 divisors (see below), whose sum is σ = 1537414095360. Its totient is φ = 768679768512.

The previous prime is 1121011220101. The next prime is 1121011220129. The reversal of 1121011220105 is 5010221101211.

It is a cyclic number.

It is not a de Polignac number, because 1121011220105 - 2² = 1121011220101 is a prime.

It is a super-2 number, since 2×1121011220105² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121011220101) 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, 1967927 + ... + 2472803.

It is an arithmetic number, because the mean of its divisors is an integer number (96088380960).

Almost surely, 2^{1121011220105} is an apocalyptic number.

It is an amenable number.

1121011220105 is a deficient number, since it is larger than the sum of its proper divisors (416402875255).

1121011220105 is an equidigital number, since it uses as much as digits as its factorization.

1121011220105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 568328.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 1121011220105 its reverse (5010221101211), we get a palindrome (6131232321316).

The spelling of 1121011220105 in words is "one trillion, one hundred twenty-one billion, eleven million, two hundred twenty thousand, one hundred five".