21162323214 has 24 divisors (see below), whose sum is σ = 48548859840. Its totient is φ = 6639160128.

The previous prime is 21162323183. The next prime is 21162323219. The reversal of 21162323214 is 41232326112.

21162323214 is a `hidden beast` number, since 2 + 1 + 1 + 623 + 2 + 32 + 1 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21162323219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34578654 + ... + 34579265.

It is an arithmetic number, because the mean of its divisors is an integer number (2022869160).

Almost surely, 2^21162323214 is an apocalyptic number.

21162323214 is an abundant number, since it is smaller than the sum of its proper divisors (27386536626).

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

21162323214 is a wasteful number, since it uses less digits than its factorization.

21162323214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69157944 (or 69157941 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 21162323214 its reverse (41232326112), we get a palindrome (62394649326).

The spelling of 21162323214 in words is "twenty-one billion, one hundred sixty-two million, three hundred twenty-three thousand, two hundred fourteen".