21110201220104 has 64 divisors (see below), whose sum is σ = 40171199972400. Its totient is φ = 10398754308096.

The previous prime is 21110201220049. The next prime is 21110201220127. The reversal of 21110201220104 is 40102210201112.

It can be written as a sum of positive squares in 8 ways, for example, as 4094592720100 + 17015608500004 = 2023510^2 + 4124998^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1642427342 + ... + 1642440194.

Almost surely, 2^{21110201220104} is an apocalyptic number.

It is an amenable number.

21110201220104 is a deficient number, since it is larger than the sum of its proper divisors (19060998752296).

21110201220104 is a wasteful number, since it uses less digits than its factorization.

21110201220104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21114 (or 21110 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21110201220104 its reverse (40102210201112), we get a palindrome (61212411421216).

The spelling of 21110201220104 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, two hundred twenty thousand, one hundred four".