11001616421 has 4 divisors (see below), whose sum is σ = 11002963200. Its totient is φ = 11000269644.

The previous prime is 11001616411. The next prime is 11001616433. The reversal of 11001616421 is 12461610011.

It is a happy number.

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 11001616421 - 2⁶ = 11001616357 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 (11001616411) 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 3 ways as a sum of consecutive naturals, for example, 661061 + ... + 677498.

It is an arithmetic number, because the mean of its divisors is an integer number (2750740800).

Almost surely, 2^11001616421 is an apocalyptic number.

It is an amenable number.

11001616421 is a deficient number, since it is larger than the sum of its proper divisors (1346779).

11001616421 is an equidigital number, since it uses as much as digits as its factorization.

11001616421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346778.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11001616421 in words is "eleven billion, one million, six hundred sixteen thousand, four hundred twenty-one".