11670782121 has 12 divisors (see below), whose sum is σ = 16858812672. Its totient is φ = 7780052376.

The previous prime is 11670782119. The next prime is 11670782131. The reversal of 11670782121 is 12128707611.

It is not a de Polignac number, because 11670782121 - 2¹ = 11670782119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11670782131) 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, 187840 + ... + 242126.

It is an arithmetic number, because the mean of its divisors is an integer number (1404901056).

Almost surely, 2^11670782121 is an apocalyptic number.

It is an amenable number.

11670782121 is a deficient number, since it is larger than the sum of its proper divisors (5188030551).

11670782121 is a wasteful number, since it uses less digits than its factorization.

11670782121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78180 (or 78177 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 36.

The spelling of 11670782121 in words is "eleven billion, six hundred seventy million, seven hundred eighty-two thousand, one hundred twenty-one".