10021111111 has 8 divisors (see below), whose sum is σ = 10936304784. Its totient is φ = 9106614720.

The previous prime is 10021111103. The next prime is 10021111129. The reversal of 10021111111 is 11111112001.

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

It is a cyclic number.

It is not a de Polignac number, because 10021111111 - 2³ = 10021111103 is a prime.

It is a Duffinian number.

10021111111 is a modest number, since divided by 111111 gives 10021 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10021111411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144036 + ... + 201961.

It is an arithmetic number, because the mean of its divisors is an integer number (1367038098).

Almost surely, 2^10021111111 is an apocalyptic number.

10021111111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

10021111111 is a deficient number, since it is larger than the sum of its proper divisors (915193673).

10021111111 is a wasteful number, since it uses less digits than its factorization.

10021111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348641.

The product of its (nonzero) digits is 2, while the sum is 10.

Adding to 10021111111 its reverse (11111112001), we get a palindrome (21132223112).

The spelling of 10021111111 in words is "ten billion, twenty-one million, one hundred eleven thousand, one hundred eleven".