211221030110 has 16 divisors (see below), whose sum is σ = 380204279136. Its totient is φ = 84486984288.

The previous prime is 211221030103. The next prime is 211221030191. The reversal of 211221030110 is 11030122112.

It is a super-2 number, since 2×211221030110² (a number of 23 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 7 ways as a sum of consecutive naturals, for example, 607844 + ... + 889896.

It is an arithmetic number, because the mean of its divisors is an integer number (23762767446).

Almost surely, 2^211221030110 is an apocalyptic number.

211221030110 is a deficient number, since it is larger than the sum of its proper divisors (168983249026).

211221030110 is a wasteful number, since it uses less digits than its factorization.

211221030110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356947.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 211221030110 its reverse (11030122112), we get a palindrome (222251152222).

The spelling of 211221030110 in words is "two hundred eleven billion, two hundred twenty-one million, thirty thousand, one hundred ten".