21005411120006 has 8 divisors (see below), whose sum is σ = 31802585060520. Its totient is φ = 10404549433168.

The previous prime is 21005411119999. The next prime is 21005411120017. The reversal of 21005411120006 is 60002111450012.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49078063151 + ... + 49078063578.

It is an arithmetic number, because the mean of its divisors is an integer number (3975323132565).

Almost surely, 2^{21005411120006} is an apocalyptic number.

21005411120006 is a deficient number, since it is larger than the sum of its proper divisors (10797173940514).

21005411120006 is a wasteful number, since it uses less digits than its factorization.

21005411120006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98156126838.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 21005411120006 its reverse (60002111450012), we get a palindrome (81007522570018).

The spelling of 21005411120006 in words is "twenty-one trillion, five billion, four hundred eleven million, one hundred twenty thousand, six".