21120410143 has 8 divisors (see below), whose sum is σ = 24916244480. Its totient is φ = 17519234040.

The previous prime is 21120410137. The next prime is 21120410167. The reversal of 21120410143 is 34101402112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21120410143 - 2⁵ = 21120410111 is a prime.

It is a super-3 number, since 3×21120410143³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 21120410143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21120410243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48664323 + ... + 48664756.

It is an arithmetic number, because the mean of its divisors is an integer number (3114530560).

Almost surely, 2^21120410143 is an apocalyptic number.

21120410143 is a deficient number, since it is larger than the sum of its proper divisors (3795834337).

21120410143 is an equidigital number, since it uses as much as digits as its factorization.

21120410143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97329117.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 21120410143 its reverse (34101402112), we get a palindrome (55221812255).

The spelling of 21120410143 in words is "twenty-one billion, one hundred twenty million, four hundred ten thousand, one hundred forty-three".