1111211211210 has 32 divisors (see below), whose sum is σ = 2807270429760. Its totient is φ = 280727042688.

The previous prime is 1111211211199. The next prime is 1111211211241. The reversal of 1111211211210 is 121121121111.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1111211211210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 974746107 + ... + 974747246.

It is an arithmetic number, because the mean of its divisors is an integer number (87727200930).

Almost surely, 2^{1111211211210} is an apocalyptic number.

1111211211210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111211211210 is an abundant number, since it is smaller than the sum of its proper divisors (1696059218550).

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

1111211211210 is a wasteful number, since it uses less digits than its factorization.

1111211211210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1949493382.

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

Adding to 1111211211210 its reverse (121121121111), we get a palindrome (1232332332321).

Subtracting from 1111211211210 its reverse (121121121111), we obtain a palindrome (990090090099).

The spelling of 1111211211210 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred eleven thousand, two hundred ten".