1201120011 has 72 divisors (see below), whose sum is σ = 2205808800. Its totient is φ = 616232448.

The previous prime is 1201120003. The next prime is 1201120031. The reversal of 1201120011 is 1100211021.

It is a happy number.

1201120011 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1201120011 - 2³ = 1201120003 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 = 1201119975 and 1201120002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201120031) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 392415 + ... + 395463.

Almost surely, 2^1201120011 is an apocalyptic number.

1201120011 is a deficient number, since it is larger than the sum of its proper divisors (1004688789).

1201120011 is a wasteful number, since it uses less digits than its factorization.

1201120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125 (or 3109 counting only the distinct ones).

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

The square root of 1201120011 is about 34657.1783473496. The cubic root of 1201120011 is about 1062.9890745142.

Adding to 1201120011 its reverse (1100211021), we get a palindrome (2301331032).

The spelling of 1201120011 in words is "one billion, two hundred one million, one hundred twenty thousand, eleven".