21143034112 has 36 divisors (see below), whose sum is σ = 42378720076. Its totient is φ = 10527621120.

The previous prime is 21143034103. The next prime is 21143034127.

21143034112 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 11893211136 + 9249822976 = 109056^2 + 96176^2 .

It is a super-2 number, since 2×21143034112² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109653 + ... + 233044.

Almost surely, 2^21143034112 is an apocalyptic number.

It is an amenable number.

21143034112 is an abundant number, since it is smaller than the sum of its proper divisors (21235685964).

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

21143034112 is an equidigital number, since it uses as much as digits as its factorization.

21143034112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342954 (or 342940 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

It can be divided in two parts, 211430 and 34112, that added together give a palindrome (245542).

The spelling of 21143034112 in words is "twenty-one billion, one hundred forty-three million, thirty-four thousand, one hundred twelve".