211220212110 has 32 divisors (see below), whose sum is σ = 524408804640. Its totient is φ = 54383134848.

The previous prime is 211220212067. The next prime is 211220212117. The reversal of 211220212110 is 11212022112.

211220212110 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×211220212110² (a number of 23 digits) contains 22 as substring.

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 211220212110.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220212117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121390057 + ... + 121391796.

It is an arithmetic number, because the mean of its divisors is an integer number (16387775145).

Almost surely, 2^211220212110 is an apocalyptic number.

211220212110 is an abundant number, since it is smaller than the sum of its proper divisors (313188592530).

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

211220212110 is a wasteful number, since it uses less digits than its factorization.

211220212110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242781892.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 211220212110 its reverse (11212022112), we get a palindrome (222432234222).

The spelling of 211220212110 in words is "two hundred eleven billion, two hundred twenty million, two hundred twelve thousand, one hundred ten".