21214010214 has 32 divisors (see below), whose sum is σ = 47171773440. Its totient is φ = 7066907496.

The previous prime is 21214010161. The next prime is 21214010231. The reversal of 21214010214 is 41201041212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35454 + ... + 209009.

It is an arithmetic number, because the mean of its divisors is an integer number (1474117920).

Almost surely, 2^21214010214 is an apocalyptic number.

21214010214 is an abundant number, since it is smaller than the sum of its proper divisors (25957763226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214010214 is a wasteful number, since it uses less digits than its factorization.

21214010214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246081 (or 246075 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21214010214 its reverse (41201041212), we get a palindrome (62415051426).

The spelling of 21214010214 in words is "twenty-one billion, two hundred fourteen million, ten thousand, two hundred fourteen".