1121200011 has 48 divisors (see below), whose sum is σ = 1701778624. Its totient is φ = 710664192.

The previous prime is 1121200009. The next prime is 1121200027. The reversal of 1121200011 is 1100021211.

It is a happy number.

It is not a de Polignac number, because 1121200011 - 2¹ = 1121200009 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121199966 and 1121200002.

It is not an unprimeable number, because it can be changed into a prime (1121200081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3326835 + ... + 3327171.

Almost surely, 2^1121200011 is an apocalyptic number.

1121200011 is a deficient number, since it is larger than the sum of its proper divisors (580578613).

1121200011 is a wasteful number, since it uses less digits than its factorization.

1121200011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580 (or 577 counting only the distinct ones).

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

The square root of 1121200011 is about 33484.3248550721. The cubic root of 1121200011 is about 1038.8695838207.

Adding to 1121200011 its reverse (1100021211), we get a palindrome (2221221222).

The spelling of 1121200011 in words is "one billion, one hundred twenty-one million, two hundred thousand, eleven".