11020120133 has 12 divisors (see below), whose sum is σ = 12143588940. Its totient is φ = 9993012480.

The previous prime is 11020120129. The next prime is 11020120141. The reversal of 11020120133 is 33102102011.

It can be written as a sum of positive squares in 2 ways, for example, as 5664368644 + 5355751489 = 75262^2 + 73183^2 .

It is not a de Polignac number, because 11020120133 - 2² = 11020120129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11020120183) 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, 66668 + ... + 162741.

It is an arithmetic number, because the mean of its divisors is an integer number (1011965745).

Almost surely, 2^11020120133 is an apocalyptic number.

It is an amenable number.

11020120133 is a deficient number, since it is larger than the sum of its proper divisors (1123468807).

11020120133 is a wasteful number, since it uses less digits than its factorization.

11020120133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229828 (or 229817 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11020120133 its reverse (33102102011), we get a palindrome (44122222144).

The spelling of 11020120133 in words is "eleven billion, twenty million, one hundred twenty thousand, one hundred thirty-three".