1122001011 has 32 divisors (see below), whose sum is σ = 1719613440. Its totient is φ = 722282400.

The previous prime is 1122000953. The next prime is 1122001031. The reversal of 1122001011 is 1101002211.

It is a happy number.

It is not a de Polignac number, because 1122001011 - 2⁶ = 1122000947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 1122000984 and 1122001002.

It is not an unprimeable number, because it can be changed into a prime (1122001031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470041 + ... + 472421.

It is an arithmetic number, because the mean of its divisors is an integer number (53737920).

Almost surely, 2^1122001011 is an apocalyptic number.

1122001011 is a deficient number, since it is larger than the sum of its proper divisors (597612429).

1122001011 is a wasteful number, since it uses less digits than its factorization.

1122001011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2984 (or 2978 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1122001011 is about 33496.2835401183. The cubic root of 1122001011 is about 1039.1169189511.

Adding to 1122001011 its reverse (1101002211), we get a palindrome (2223003222).

The spelling of 1122001011 in words is "one billion, one hundred twenty-two million, one thousand, eleven".