10212211112111 has 4 divisors (see below), whose sum is σ = 10449704393832. Its totient is φ = 9974717830392.

The previous prime is 10212211112107. The next prime is 10212211112119. The reversal of 10212211112111 is 11121111221201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10212211112111 - 2² = 10212211112107 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 10212211112111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212211112119) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118746640796 + ... + 118746640881.

It is an arithmetic number, because the mean of its divisors is an integer number (2612426098458).

Almost surely, 2^{10212211112111} is an apocalyptic number.

10212211112111 is a deficient number, since it is larger than the sum of its proper divisors (237493281721).

10212211112111 is an equidigital number, since it uses as much as digits as its factorization.

10212211112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237493281720.

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

Adding to 10212211112111 its reverse (11121111221201), we get a palindrome (21333322333312).

The spelling of 10212211112111 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, one hundred twelve thousand, one hundred eleven".