21011110010104 has 32 divisors (see below), whose sum is σ = 40305504510720. Its totient is φ = 10263769519456.

The previous prime is 21011110010003. The next prime is 21011110010227. The reversal of 21011110010104 is 40101001111012.

It is a super-4 number, since 4×21011110010104⁴ (a number of 54 digits) contains 4444 as substring.

It is a congruent number.

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, 49415854 + ... + 49839229.

It is an arithmetic number, because the mean of its divisors is an integer number (1259547015960).

Almost surely, 2^{21011110010104} is an apocalyptic number.

It is an amenable number.

21011110010104 is a deficient number, since it is larger than the sum of its proper divisors (19294394500616).

21011110010104 is a wasteful number, since it uses less digits than its factorization.

21011110010104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99255699 (or 99255695 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21011110010104 its reverse (40101001111012), we get a palindrome (61112111121116).

The spelling of 21011110010104 in words is "twenty-one trillion, eleven billion, one hundred ten million, ten thousand, one hundred four".