10111221212011 has 32 divisors (see below), whose sum is σ = 10554284482560. Its totient is φ = 9679959374976.

The previous prime is 10111221211981. The next prime is 10111221212017. The reversal of 10111221212011 is 11021212211101.

It is a cyclic number.

It is not a de Polignac number, because 10111221212011 - 2¹³ = 10111221203819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10111221212017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 278765985 + ... + 278802253.

It is an arithmetic number, because the mean of its divisors is an integer number (329821390080).

Almost surely, 2^{10111221212011} is an apocalyptic number.

10111221212011 is a deficient number, since it is larger than the sum of its proper divisors (443063270549).

10111221212011 is a wasteful number, since it uses less digits than its factorization.

10111221212011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37003.

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

Adding to 10111221212011 its reverse (11021212211101), we get a palindrome (21132433423112).

It can be divided in two parts, 10111 and 221212011, that added together give a palindrome (221222122).

The spelling of 10111221212011 in words is "ten trillion, one hundred eleven billion, two hundred twenty-one million, two hundred twelve thousand, eleven".