21102234112 has 20 divisors (see below), whose sum is σ = 42163253946. Its totient is φ = 10551116800.

The previous prime is 21102234103. The next prime is 21102234121. The reversal of 21102234112 is 21143220112.

It is an interprime number because it is at equal distance from previous prime (21102234103) and next prime (21102234121).

It can be written as a sum of positive squares in only one way, i.e., 13157007616 + 7945226496 = 114704^2 + 89136^2 .

It is a hoax number, since the sum of its digits (19) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 21102234112.

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 as a sum of consecutive naturals, namely, 20607139 + ... + 20608162.

Almost surely, 2^21102234112 is an apocalyptic number.

It is an amenable number.

21102234112 is a deficient number, since it is larger than the sum of its proper divisors (21061019834).

21102234112 is an frugal number, since it uses more digits than its factorization.

21102234112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41215319 (or 41215303 counting only the distinct ones).

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

Adding to 21102234112 its reverse (21143220112), we get a palindrome (42245454224).

The spelling of 21102234112 in words is "twenty-one billion, one hundred two million, two hundred thirty-four thousand, one hundred twelve".