21234252214 has 24 divisors (see below), whose sum is σ = 37068505848. Its totient is φ = 9096242400.

The previous prime is 21234252157. The next prime is 21234252223. The reversal of 21234252214 is 41225243212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 171514 + ... + 268114.

It is an arithmetic number, because the mean of its divisors is an integer number (1544521077).

Almost surely, 2^21234252214 is an apocalyptic number.

21234252214 is a deficient number, since it is larger than the sum of its proper divisors (15834253634).

21234252214 is a wasteful number, since it uses less digits than its factorization.

21234252214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98860 (or 98853 counting only the distinct ones).

The product of its digits is 7680, while the sum is 28.

Adding to 21234252214 its reverse (41225243212), we get a palindrome (62459495426).

The spelling of 21234252214 in words is "twenty-one billion, two hundred thirty-four million, two hundred fifty-two thousand, two hundred fourteen".