21433111042 has 32 divisors (see below), whose sum is σ = 37075667328. Its totient is φ = 9102558336.

The previous prime is 21433111019. The next prime is 21433111061. The reversal of 21433111042 is 24011133412.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1116348 + ... + 1135384.

It is an arithmetic number, because the mean of its divisors is an integer number (1158614604).

Almost surely, 2^21433111042 is an apocalyptic number.

21433111042 is a deficient number, since it is larger than the sum of its proper divisors (15642556286).

21433111042 is a wasteful number, since it uses less digits than its factorization.

21433111042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19770.

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

Adding to 21433111042 its reverse (24011133412), we get a palindrome (45444244454).

The spelling of 21433111042 in words is "twenty-one billion, four hundred thirty-three million, one hundred eleven thousand, forty-two".