102221011211 has 4 divisors (see below), whose sum is σ = 111513830424. Its totient is φ = 92928192000.

The previous prime is 102221011183. The next prime is 102221011213. The reversal of 102221011211 is 112110122201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102221011211 - 2¹⁰ = 102221010187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102221011213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4646409590 + ... + 4646409611.

It is an arithmetic number, because the mean of its divisors is an integer number (27878457606).

Almost surely, 2^102221011211 is an apocalyptic number.

102221011211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102221011211 is a deficient number, since it is larger than the sum of its proper divisors (9292819213).

102221011211 is an equidigital number, since it uses as much as digits as its factorization.

102221011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9292819212.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102221011211 its reverse (112110122201), we get a palindrome (214331133412).

The spelling of 102221011211 in words is "one hundred two billion, two hundred twenty-one million, eleven thousand, two hundred eleven".