21112214034 has 16 divisors (see below), whose sum is σ = 42368542272. Its totient is φ = 7013385648.

The previous prime is 21112213979. The next prime is 21112214077. The reversal of 21112214034 is 43041221112.

It is a self number, because there is not a number n which added to its sum of digits gives 21112214034.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6002854 + ... + 6006369.

It is an arithmetic number, because the mean of its divisors is an integer number (2648033892).

Almost surely, 2^21112214034 is an apocalyptic number.

21112214034 is an abundant number, since it is smaller than the sum of its proper divisors (21256328238).

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

21112214034 is a wasteful number, since it uses less digits than its factorization.

21112214034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12009521.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21112214034 its reverse (43041221112), we get a palindrome (64153435146).

The spelling of 21112214034 in words is "twenty-one billion, one hundred twelve million, two hundred fourteen thousand, thirty-four".