11630532121 has 16 divisors (see below), whose sum is σ = 12861846928. Its totient is φ = 10450944000.

The previous prime is 11630532097. The next prime is 11630532209. The reversal of 11630532121 is 12123503611.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5011082521 + 6619449600 = 70789^2 + 81360^2 .

It is a cyclic number.

It is not a de Polignac number, because 11630532121 - 2⁷ = 11630531993 is a prime.

It is a super-2 number, since 2×11630532121² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11630532821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321 + ... + 152521.

It is an arithmetic number, because the mean of its divisors is an integer number (803865433).

Almost surely, 2^11630532121 is an apocalyptic number.

It is an amenable number.

11630532121 is a deficient number, since it is larger than the sum of its proper divisors (1231314807).

11630532121 is a wasteful number, since it uses less digits than its factorization.

11630532121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151372.

The product of its (nonzero) digits is 1080, while the sum is 25.

The spelling of 11630532121 in words is "eleven billion, six hundred thirty million, five hundred thirty-two thousand, one hundred twenty-one".