11110521601 has 4 divisors (see below), whose sum is σ = 11110736304. Its totient is φ = 11110306900.

The previous prime is 11110521497. The next prime is 11110521607. The reversal of 11110521601 is 10612501111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 10612501111 = 2411 ⋅4401701.

It is a cyclic number.

It is not a de Polignac number, because 11110521601 - 2⁹ = 11110521089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11110521607) 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, 23166 + ... + 150856.

It is an arithmetic number, because the mean of its divisors is an integer number (2777684076).

Almost surely, 2^11110521601 is an apocalyptic number.

It is an amenable number.

11110521601 is a deficient number, since it is larger than the sum of its proper divisors (214703).

11110521601 is an equidigital number, since it uses as much as digits as its factorization.

11110521601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214702.

The product of its (nonzero) digits is 60, while the sum is 19.

The spelling of 11110521601 in words is "eleven billion, one hundred ten million, five hundred twenty-one thousand, six hundred one".