21102200110 has 32 divisors (see below), whose sum is σ = 38098631232. Its totient is φ = 8415440640.

The previous prime is 21102200069. The next prime is 21102200143. The reversal of 21102200110 is 1100220112.

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 15 ways as a sum of consecutive naturals, for example, 5435370 + ... + 5439250.

It is an arithmetic number, because the mean of its divisors is an integer number (1190582226).

Almost surely, 2^21102200110 is an apocalyptic number.

21102200110 is a deficient number, since it is larger than the sum of its proper divisors (16996431122).

21102200110 is a wasteful number, since it uses less digits than its factorization.

21102200110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5388.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21102200110 its reverse (1100220112), we get a palindrome (22202420222).

The spelling of 21102200110 in words is "twenty-one billion, one hundred two million, two hundred thousand, one hundred ten".