21100101200110 has 64 divisors (see below), whose sum is σ = 39639477233664. Its totient is φ = 8077763491200.

The previous prime is 21100101200093. The next prime is 21100101200131. The reversal of 21100101200110 is 1100210100112.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11012077 + ... + 12785383.

It is an arithmetic number, because the mean of its divisors is an integer number (619366831776).

Almost surely, 2^{21100101200110} is an apocalyptic number.

21100101200110 is a deficient number, since it is larger than the sum of its proper divisors (18539376033554).

21100101200110 is a wasteful number, since it uses less digits than its factorization.

21100101200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1773769.

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

Adding to 21100101200110 its reverse (1100210100112), we get a palindrome (22200311300222).

The spelling of 21100101200110 in words is "twenty-one trillion, one hundred billion, one hundred one million, two hundred thousand, one hundred ten".