21100234214 has 4 divisors (see below), whose sum is σ = 31650351324. Its totient is φ = 10550117106.

The previous prime is 21100234213. The next prime is 21100234241. The reversal of 21100234214 is 41243200112.

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 (21100234213) by changing a digit.

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 as a sum of consecutive naturals, namely, 5275058552 + ... + 5275058555.

It is an arithmetic number, because the mean of its divisors is an integer number (7912587831).

Almost surely, 2^21100234214 is an apocalyptic number.

21100234214 is a deficient number, since it is larger than the sum of its proper divisors (10550117110).

21100234214 is a wasteful number, since it uses less digits than its factorization.

21100234214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10550117109.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21100234214 its reverse (41243200112), we get a palindrome (62343434326).

The spelling of 21100234214 in words is "twenty-one billion, one hundred million, two hundred thirty-four thousand, two hundred fourteen".