21611727210214 has 16 divisors (see below), whose sum is σ = 33535580259600. Its totient is φ = 10433203601184.

The previous prime is 21611727210197. The next prime is 21611727210217. The reversal of 21611727210214 is 41201272711612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21611727210217) 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, 16227352 + ... + 17508580.

It is an arithmetic number, because the mean of its divisors is an integer number (2095973766225).

Almost surely, 2^{21611727210214} is an apocalyptic number.

21611727210214 is a deficient number, since it is larger than the sum of its proper divisors (11923853049386).

21611727210214 is a wasteful number, since it uses less digits than its factorization.

21611727210214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572087.

The product of its (nonzero) digits is 18816, while the sum is 37.

Adding to 21611727210214 its reverse (41201272711612), we get a palindrome (62812999921826).

The spelling of 21611727210214 in words is "twenty-one trillion, six hundred eleven billion, seven hundred twenty-seven million, two hundred ten thousand, two hundred fourteen".