21455000532211 has 8 divisors (see below), whose sum is σ = 22391242548480. Its totient is φ = 20531852810112.

The previous prime is 21455000532083. The next prime is 21455000532271. The reversal of 21455000532211 is 11223500055412.

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

It is a cyclic number.

It is not a de Polignac number, because 21455000532211 - 2⁷ = 21455000532083 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21455000532271) 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, 3273570195 + ... + 3273576748.

It is an arithmetic number, because the mean of its divisors is an integer number (2798905318560).

Almost surely, 2^{21455000532211} is an apocalyptic number.

21455000532211 is a deficient number, since it is larger than the sum of its proper divisors (936242016269).

21455000532211 is a wasteful number, since it uses less digits than its factorization.

21455000532211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6547147085.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 21455000532211 its reverse (11223500055412), we get a palindrome (32678500587623).

The spelling of 21455000532211 in words is "twenty-one trillion, four hundred fifty-five billion, five hundred thirty-two thousand, two hundred eleven".