1111211212210 has 32 divisors (see below), whose sum is σ = 2203618872384. Its totient is φ = 400076040000.

The previous prime is 1111211212183. The next prime is 1111211212229. The reversal of 1111211212210 is 122121121111.

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, 49998396 + ... + 50020615.

It is an arithmetic number, because the mean of its divisors is an integer number (68863089762).

Almost surely, 2^{1111211212210} is an apocalyptic number.

1111211212210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111211212210 is a deficient number, since it is larger than the sum of its proper divisors (1092407660174).

1111211212210 is a wasteful number, since it uses less digits than its factorization.

1111211212210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100019130.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1111211212210 its reverse (122121121111), we get a palindrome (1233332333321).

The spelling of 1111211212210 in words is "one trillion, one hundred eleven billion, two hundred eleven million, two hundred twelve thousand, two hundred ten".