11700121 has 4 divisors (see below), whose sum is σ = 11920932. Its totient is φ = 11479312.

The previous prime is 11700119. The next prime is 11700127. The reversal of 11700121 is 12100711.

11700121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8620096 + 3080025 = 2936^2 + 1755^2 .

It is a cyclic number.

It is not a de Polignac number, because 11700121 - 2¹ = 11700119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11700127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110326 + ... + 110431.

It is an arithmetic number, because the mean of its divisors is an integer number (2980233).

Almost surely, 2^11700121 is an apocalyptic number.

It is an amenable number.

11700121 is a deficient number, since it is larger than the sum of its proper divisors (220811).

11700121 is an equidigital number, since it uses as much as digits as its factorization.

11700121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220810.

The product of its (nonzero) digits is 14, while the sum is 13.

The square root of 11700121 is about 3420.5439625884. The cubic root of 11700121 is about 227.0196506629.

Adding to 11700121 its reverse (12100711), we get a palindrome (23800832).

The spelling of 11700121 in words is "eleven million, seven hundred thousand, one hundred twenty-one".