1121298111 has 12 divisors (see below), whose sum is σ = 1621156992. Its totient is φ = 746837856.

The previous prime is 1121298107. The next prime is 1121298169. The reversal of 1121298111 is 1118921211.

It is not a de Polignac number, because 1121298111 - 2² = 1121298107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121298181) 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, 47526 + ... + 67091.

It is an arithmetic number, because the mean of its divisors is an integer number (135096416).

Almost surely, 2^1121298111 is an apocalyptic number.

1121298111 is a deficient number, since it is larger than the sum of its proper divisors (499858881).

1121298111 is a wasteful number, since it uses less digits than its factorization.

1121298111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115710 (or 115707 counting only the distinct ones).

The product of its digits is 288, while the sum is 27.

The square root of 1121298111 is about 33485.7896875675. The cubic root of 1121298111 is about 1038.8998817553.

The spelling of 1121298111 in words is "one billion, one hundred twenty-one million, two hundred ninety-eight thousand, one hundred eleven".