21111340221214 has 4 divisors (see below), whose sum is σ = 31667010331824. Its totient is φ = 10555670110606.

The previous prime is 21111340221173. The next prime is 21111340221217. The reversal of 21111340221214 is 41212204311112.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21111340221217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5277835055302 + ... + 5277835055305.

It is an arithmetic number, because the mean of its divisors is an integer number (7916752582956).

Almost surely, 2^{21111340221214} is an apocalyptic number.

21111340221214 is a deficient number, since it is larger than the sum of its proper divisors (10555670110610).

21111340221214 is a wasteful number, since it uses less digits than its factorization.

21111340221214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10555670110609.

The product of its (nonzero) digits is 768, while the sum is 25.

Adding to 21111340221214 its reverse (41212204311112), we get a palindrome (62323544532326).

The spelling of 21111340221214 in words is "twenty-one trillion, one hundred eleven billion, three hundred forty million, two hundred twenty-one thousand, two hundred fourteen".