21143210110 has 32 divisors (see below), whose sum is σ = 41608523232. Its totient is φ = 7671598080.

The previous prime is 21143210083. The next prime is 21143210117. The reversal of 21143210110 is 1101234112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21143210117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160027 + ... + 260566.

It is an arithmetic number, because the mean of its divisors is an integer number (1300266351).

Almost surely, 2^21143210110 is an apocalyptic number.

21143210110 is a deficient number, since it is larger than the sum of its proper divisors (20465313122).

21143210110 is a wasteful number, since it uses less digits than its factorization.

21143210110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421068.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 21143210110 its reverse (1101234112), we get a palindrome (22244444222).

The spelling of 21143210110 in words is "twenty-one billion, one hundred forty-three million, two hundred ten thousand, one hundred ten".