11675457221 has 8 divisors (see below), whose sum is σ = 11739324120. Its totient is φ = 11611625472.

The previous prime is 11675457203. The next prime is 11675457239. The reversal of 11675457221 is 12275457611.

It is an interprime number because it is at equal distance from previous prime (11675457203) and next prime (11675457239).

It can be written as a sum of positive squares in 4 ways, for example, as 5257845121 + 6417612100 = 72511^2 + 80110^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11675457221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11675453221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 922625 + ... + 935193.

It is an arithmetic number, because the mean of its divisors is an integer number (1467415515).

Almost surely, 2^11675457221 is an apocalyptic number.

It is an amenable number.

11675457221 is a deficient number, since it is larger than the sum of its proper divisors (63866899).

11675457221 is a wasteful number, since it uses less digits than its factorization.

11675457221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17575.

The product of its digits is 117600, while the sum is 41.

The spelling of 11675457221 in words is "eleven billion, six hundred seventy-five million, four hundred fifty-seven thousand, two hundred twenty-one".