10021220111111 has 8 divisors (see below), whose sum is σ = 11038378376064. Its totient is φ = 9021751555320.

The previous prime is 10021220111059. The next prime is 10021220111141. The reversal of 10021220111111 is 11111102212001.

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-10021220111111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021220111141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4422426101 + ... + 4422428366.

It is an arithmetic number, because the mean of its divisors is an integer number (1379797297008).

Almost surely, 2^{10021220111111} is an apocalyptic number.

10021220111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021220111111 is a deficient number, since it is larger than the sum of its proper divisors (1017158264953).

10021220111111 is a wasteful number, since it uses less digits than its factorization.

10021220111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8844854581.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 10021220111111 its reverse (11111102212001), we get a palindrome (21132322323112).

The spelling of 10021220111111 in words is "ten trillion, twenty-one billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".