21100102110010 has 128 divisors (see below), whose sum is σ = 48522298226688. Its totient is φ = 6414539040000.

The previous prime is 21100102109959. The next prime is 21100102110023. The reversal of 21100102110010 is 1001120100112.

It is a Harshad number since it is a multiple of its sum of digits (10).

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 63 ways as a sum of consecutive naturals, for example, 22755565 + ... + 23664655.

It is an arithmetic number, because the mean of its divisors is an integer number (379080454896).

Almost surely, 2^{21100102110010} is an apocalyptic number.

21100102110010 is an abundant number, since it is smaller than the sum of its proper divisors (27422196116678).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21100102110010 is a wasteful number, since it uses less digits than its factorization.

21100102110010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 909860.

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

Adding to 21100102110010 its reverse (1001120100112), we get a palindrome (22101222210122).

The spelling of 21100102110010 in words is "twenty-one trillion, one hundred billion, one hundred two million, one hundred ten thousand, ten".