211110121066 has 16 divisors (see below), whose sum is σ = 343041942600. Its totient is φ = 97435438464.

The previous prime is 211110120989. The next prime is 211110121067. The reversal of 211110121066 is 660121011112.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 369446841 + 210740674225 = 19221^2 + 459065^2 .

It is not an unprimeable number, because it can be changed into a prime (211110121067) 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, 24018151 + ... + 24026938.

Almost surely, 2^211110121066 is an apocalyptic number.

211110121066 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

211110121066 is a deficient number, since it is larger than the sum of its proper divisors (131931821534).

211110121066 is an equidigital number, since it uses as much as digits as its factorization.

211110121066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48045130 (or 48045104 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 211110121066 its reverse (660121011112), we get a palindrome (871231132178).

The spelling of 211110121066 in words is "two hundred eleven billion, one hundred ten million, one hundred twenty-one thousand, sixty-six".