1011121105 has 16 divisors (see below), whose sum is σ = 1281899520. Its totient is φ = 764381632.

The previous prime is 1011121103. The next prime is 1011121117. The reversal of 1011121105 is 5011211101.

It is a cyclic number.

It is not a de Polignac number, because 1011121105 - 2¹ = 1011121103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1011121103) 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, 67369 + ... + 80998.

It is an arithmetic number, because the mean of its divisors is an integer number (80118720).

Almost surely, 2^1011121105 is an apocalyptic number.

It is an amenable number.

1011121105 is a deficient number, since it is larger than the sum of its proper divisors (270778415).

1011121105 is a wasteful number, since it uses less digits than its factorization.

1011121105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148448.

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 1011121105 is about 31798.1305268093. The cubic root of 1011121105 is about 1003.6933771712.

Adding to 1011121105 its reverse (5011211101), we get a palindrome (6022332206).

The spelling of 1011121105 in words is "one billion, eleven million, one hundred twenty-one thousand, one hundred five".