1121202111 has 12 divisors (see below), whose sum is σ = 1509925256. Its totient is φ = 740047200.

The previous prime is 1121202073. The next prime is 1121202151. The reversal of 1121202111 is 1112021211.

It is not a de Polignac number, because 1121202111 - 2¹³ = 1121193919 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 (1121202151) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12285 + ... + 48921.

Almost surely, 2^1121202111 is an apocalyptic number.

1121202111 is a deficient number, since it is larger than the sum of its proper divisors (388723145).

1121202111 is an equidigital number, since it uses as much as digits as its factorization.

1121202111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36842 (or 36741 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

The square root of 1121202111 is about 33484.3562130139. The cubic root of 1121202111 is about 1038.8702324188.

Adding to 1121202111 its reverse (1112021211), we get a palindrome (2233223322).

Subtracting from 1121202111 its reverse (1112021211), we obtain a square (9180900 = 3030²).

The spelling of 1121202111 in words is "one billion, one hundred twenty-one million, two hundred two thousand, one hundred eleven".