211102000221 has 16 divisors (see below), whose sum is σ = 321720379904. Its totient is φ = 120614286384.

The previous prime is 211102000117. The next prime is 211102000253. The reversal of 211102000221 is 122000201112.

It is not a de Polignac number, because 211102000221 - 2⁷ = 211102000093 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211102000197 and 211102000206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211102000321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 473695 + ... + 804108.

It is an arithmetic number, because the mean of its divisors is an integer number (20107523744).

Almost surely, 2^211102000221 is an apocalyptic number.

211102000221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

211102000221 is a deficient number, since it is larger than the sum of its proper divisors (110618379683).

211102000221 is a wasteful number, since it uses less digits than its factorization.

211102000221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285680.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211102000221 its reverse (122000201112), we get a palindrome (333102201333).

The spelling of 211102000221 in words is "two hundred eleven billion, one hundred two million, two hundred twenty-one", and thus it is an aban number.