211230220110 has 64 divisors (see below), whose sum is σ = 623941581312. Its totient is φ = 44567254656.

The previous prime is 211230220109. The next prime is 211230220127. The reversal of 211230220110 is 11022032112.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 211230220110.

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, 38684124 + ... + 38689583.

It is an arithmetic number, because the mean of its divisors is an integer number (9749087208).

Almost surely, 2^211230220110 is an apocalyptic number.

211230220110 is an abundant number, since it is smaller than the sum of its proper divisors (412711361202).

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

211230220110 is a wasteful number, since it uses less digits than its factorization.

211230220110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77373737.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 211230220110 its reverse (11022032112), we get a palindrome (222252252222).

The spelling of 211230220110 in words is "two hundred eleven billion, two hundred thirty million, two hundred twenty thousand, one hundred ten".