1121220767 has 16 divisors (see below), whose sum is σ = 1197960192. Its totient is φ = 1046934240.

The previous prime is 1121220733. The next prime is 1121220773. The reversal of 1121220767 is 7670221211.

It is not a de Polignac number, because 1121220767 - 2¹² = 1121216671 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 (1121220787) 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, 503717 + ... + 505937.

It is an arithmetic number, because the mean of its divisors is an integer number (74872512).

Almost surely, 2^1121220767 is an apocalyptic number.

1121220767 is a deficient number, since it is larger than the sum of its proper divisors (76739425).

1121220767 is a wasteful number, since it uses less digits than its factorization.

1121220767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2758.

The product of its (nonzero) digits is 2352, while the sum is 29.

The square root of 1121220767 is about 33484.6347897062. The cubic root of 1121220767 is about 1038.8759944057.

Adding to 1121220767 its reverse (7670221211), we get a palindrome (8791441978).

The spelling of 1121220767 in words is "one billion, one hundred twenty-one million, two hundred twenty thousand, seven hundred sixty-seven".