211220103111 has 8 divisors (see below), whose sum is σ = 282014189184. Its totient is φ = 140619709560.

The previous prime is 211220103011. The next prime is 211220103113. The reversal of 211220103111 is 111301022112.

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

It is not a de Polignac number, because 211220103111 - 2²⁵ = 211186548679 is a prime.

It is a super-2 number, since 2×211220103111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211220103113) 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, 48420585 + ... + 48424946.

It is an arithmetic number, because the mean of its divisors is an integer number (35251773648).

Almost surely, 2^211220103111 is an apocalyptic number.

211220103111 is a deficient number, since it is larger than the sum of its proper divisors (70794086073).

211220103111 is an equidigital number, since it uses as much as digits as its factorization.

211220103111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96846261.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 211220103111 its reverse (111301022112), we get a palindrome (322521125223).

The spelling of 211220103111 in words is "two hundred eleven billion, two hundred twenty million, one hundred three thousand, one hundred eleven".