21101000110102 has 12 divisors (see below), whose sum is σ = 34790491917468. Its totient is φ = 9591363686300.

The previous prime is 21101000110093. The next prime is 21101000110139. The reversal of 21101000110102 is 20101100010112.

It is a super-2 number, since 2×21101000110102² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43597107424 + ... + 43597107907.

It is an arithmetic number, because the mean of its divisors is an integer number (2899207659789).

Almost surely, 2^{21101000110102} is an apocalyptic number.

21101000110102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101000110102 is a deficient number, since it is larger than the sum of its proper divisors (13689491807366).

21101000110102 is a wasteful number, since it uses less digits than its factorization.

21101000110102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87194215355 (or 87194215344 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 21101000110102 its reverse (20101100010112), we get a palindrome (41202100120214).

The spelling of 21101000110102 in words is "twenty-one trillion, one hundred one billion, one hundred ten thousand, one hundred two".