11210021111 has 8 divisors (see below), whose sum is σ = 11235522144. Its totient is φ = 11184544800.

The previous prime is 11210021107. The next prime is 11210021117. The reversal of 11210021111 is 11112001211.

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 11210021111 - 2² = 11210021107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11210021092 and 11210021101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11210021117) 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, 1127261 + ... + 1137161.

It is an arithmetic number, because the mean of its divisors is an integer number (1404440268).

Almost surely, 2^11210021111 is an apocalyptic number.

11210021111 is a deficient number, since it is larger than the sum of its proper divisors (25501033).

11210021111 is an equidigital number, since it uses as much as digits as its factorization.

11210021111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12361.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 11210021111 its reverse (11112001211), we get a palindrome (22322022322).

The spelling of 11210021111 in words is "eleven billion, two hundred ten million, twenty-one thousand, one hundred eleven".