21200211110 has 32 divisors (see below), whose sum is σ = 41153132160. Its totient is φ = 7816848768.

The previous prime is 21200211047. The next prime is 21200211119. The reversal of 21200211110 is 1111200212.

It is a super-2 number, since 2×21200211110² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21200211091 and 21200211100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21200211119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19937 + ... + 206876.

It is an arithmetic number, because the mean of its divisors is an integer number (1286035380).

Almost surely, 2^21200211110 is an apocalyptic number.

21200211110 is a deficient number, since it is larger than the sum of its proper divisors (19952921050).

21200211110 is a wasteful number, since it uses less digits than its factorization.

21200211110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227552.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 21200211110 its reverse (1111200212), we get a palindrome (22311411322).

The spelling of 21200211110 in words is "twenty-one billion, two hundred million, two hundred eleven thousand, one hundred ten".