21034111042 has 8 divisors (see below), whose sum is σ = 36058476096. Its totient is φ = 9014619012.

The previous prime is 21034111037. The next prime is 21034111069. The reversal of 21034111042 is 24011143012.

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

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, 751218238 + ... + 751218265.

It is an arithmetic number, because the mean of its divisors is an integer number (4507309512).

Almost surely, 2^21034111042 is an apocalyptic number.

21034111042 is a deficient number, since it is larger than the sum of its proper divisors (15024365054).

21034111042 is a wasteful number, since it uses less digits than its factorization.

21034111042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1502436512.

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

Adding to 21034111042 its reverse (24011143012), we get a palindrome (45045254054).

The spelling of 21034111042 in words is "twenty-one billion, thirty-four million, one hundred eleven thousand, forty-two".