10212111221111 has 8 divisors (see below), whose sum is σ = 10214257093248. Its totient is φ = 10209965571000.

The previous prime is 10212111221083. The next prime is 10212111221131. The reversal of 10212111221111 is 11112211121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10212111221111 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10212111221111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212111221131) 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 7 ways as a sum of consecutive naturals, for example, 116093816 + ... + 116181746.

It is an arithmetic number, because the mean of its divisors is an integer number (1276782136656).

Almost surely, 2^{10212111221111} is an apocalyptic number.

10212111221111 is a deficient number, since it is larger than the sum of its proper divisors (2145872137).

10212111221111 is an equidigital number, since it uses as much as digits as its factorization.

10212111221111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111013.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 10212111221111 its reverse (11112211121201), we get a palindrome (21324322342312).

The spelling of 10212111221111 in words is "ten trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty-one thousand, one hundred eleven".