11211420210 has 32 divisors (see below), whose sum is σ = 27309016512. Its totient is φ = 2945088960.

The previous prime is 11211420191. The next prime is 11211420239. The reversal of 11211420210 is 1202411211.

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 11211420210.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2786901 + ... + 2790920.

It is an arithmetic number, because the mean of its divisors is an integer number (853406766).

Almost surely, 2^11211420210 is an apocalyptic number.

11211420210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11211420210 is an abundant number, since it is smaller than the sum of its proper divisors (16097596302).

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

11211420210 is a wasteful number, since it uses less digits than its factorization.

11211420210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5577898.

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

Adding to 11211420210 its reverse (1202411211), we get a palindrome (12413831421).

The spelling of 11211420210 in words is "eleven billion, two hundred eleven million, four hundred twenty thousand, two hundred ten".