1121002111 has 4 divisors (see below), whose sum is σ = 1126871424. Its totient is φ = 1115132800.

The previous prime is 1121002097. The next prime is 1121002121. The reversal of 1121002111 is 1112001211.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1112001211 = 67 ⋅16597033.

It is a cyclic number.

It is not a de Polignac number, because 1121002111 - 2²¹ = 1118904959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121002121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2934370 + ... + 2934751.

It is an arithmetic number, because the mean of its divisors is an integer number (281717856).

Almost surely, 2^1121002111 is an apocalyptic number.

1121002111 is a deficient number, since it is larger than the sum of its proper divisors (5869313).

1121002111 is an equidigital number, since it uses as much as digits as its factorization.

1121002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5869312.

The product of its (nonzero) digits is 4, while the sum is 10.

The square root of 1121002111 is about 33481.3696105760. The cubic root of 1121002111 is about 1038.8084575316.

Adding to 1121002111 its reverse (1112001211), we get a palindrome (2233003322).

The spelling of 1121002111 in words is "one billion, one hundred twenty-one million, two thousand, one hundred eleven".