21120110110202 has 16 divisors (see below), whose sum is σ = 32241384205800. Its totient is φ = 10373432279040.

The previous prime is 21120110110163. The next prime is 21120110110219. The reversal of 21120110110202 is 20201101102112.

It can be written as a sum of positive squares in 4 ways, for example, as 11772042343681 + 9348067766521 = 3431041^2 + 3057461^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112465127 + ... + 112652762.

Almost surely, 2^{21120110110202} is an apocalyptic number.

21120110110202 is a deficient number, since it is larger than the sum of its proper divisors (11121274095598).

21120110110202 is a wasteful number, since it uses less digits than its factorization.

21120110110202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225118721.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21120110110202 its reverse (20201101102112), we get a palindrome (41321211212314).

The spelling of 21120110110202 in words is "twenty-one trillion, one hundred twenty billion, one hundred ten million, one hundred ten thousand, two hundred two".