211021110102 has 64 divisors (see below), whose sum is σ = 493412166144. Its totient is φ = 59512400640.

The previous prime is 211021110061. The next prime is 211021110163. The reversal of 211021110102 is 201011120112.

211021110102 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1822383 + ... + 1934714.

It is an arithmetic number, because the mean of its divisors is an integer number (7709565096).

Almost surely, 2^211021110102 is an apocalyptic number.

211021110102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

211021110102 is an abundant number, since it is smaller than the sum of its proper divisors (282391056042).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211021110102 is a wasteful number, since it uses less digits than its factorization.

211021110102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3757173.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211021110102 its reverse (201011120112), we get a palindrome (412032230214).

It can be divided in two parts, 211021 and 110102, that added together give a palindrome (321123).

The spelling of 211021110102 in words is "two hundred eleven billion, twenty-one million, one hundred ten thousand, one hundred two".