21143010155012 has 12 divisors (see below), whose sum is σ = 37005533263440. Its totient is φ = 10570000651176.

The previous prime is 21143010155009. The next prime is 21143010155083. The reversal of 21143010155012 is 21055101034112.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 376074962 + ... + 376131177.

It is an arithmetic number, because the mean of its divisors is an integer number (3083794438620).

Almost surely, 2^{21143010155012} is an apocalyptic number.

It is an amenable number.

21143010155012 is a deficient number, since it is larger than the sum of its proper divisors (15862523108428).

21143010155012 is a wasteful number, since it uses less digits than its factorization.

21143010155012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752213170 (or 752213168 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 26.

Adding to 21143010155012 its reverse (21055101034112), we get a palindrome (42198111189124).

The spelling of 21143010155012 in words is "twenty-one trillion, one hundred forty-three billion, ten million, one hundred fifty-five thousand, twelve".