11351617021 has 4 divisors (see below), whose sum is σ = 11368843200. Its totient is φ = 11334390844.

The previous prime is 11351617003. The next prime is 11351617027. The reversal of 11351617021 is 12071615311.

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.

It is a cyclic number.

It is not a de Polignac number, because 11351617021 - 2⁵ = 11351616989 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 (11351617027) 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, 8612101 + ... + 8613418.

It is an arithmetic number, because the mean of its divisors is an integer number (2842210800).

Almost surely, 2^11351617021 is an apocalyptic number.

It is an amenable number.

11351617021 is a deficient number, since it is larger than the sum of its proper divisors (17226179).

11351617021 is an equidigital number, since it uses as much as digits as its factorization.

11351617021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17226178.

The product of its (nonzero) digits is 1260, while the sum is 28.

The spelling of 11351617021 in words is "eleven billion, three hundred fifty-one million, six hundred seventeen thousand, twenty-one".