11211111210210 has 16 divisors (see below), whose sum is σ = 26906666904576. Its totient is φ = 2989629656048.

The previous prime is 11211111210203. The next prime is 11211111210253. The reversal of 11211111210210 is 1201211111211.

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 11211111210210.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 186851853474 + ... + 186851853533.

It is an arithmetic number, because the mean of its divisors is an integer number (1681666681536).

Almost surely, 2^{11211111210210} is an apocalyptic number.

11211111210210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211111210210 is an abundant number, since it is smaller than the sum of its proper divisors (15695555694366).

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

11211111210210 is a wasteful number, since it uses less digits than its factorization.

11211111210210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373703707017.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11211111210210 its reverse (1201211111211), we get a palindrome (12412322321421).

The spelling of 11211111210210 in words is "eleven trillion, two hundred eleven billion, one hundred eleven million, two hundred ten thousand, two hundred ten".