102021222211 has 4 divisors (see below), whose sum is σ = 103031333424. Its totient is φ = 101011111000.

The previous prime is 102021222187. The next prime is 102021222221. The reversal of 102021222211 is 112222120201.

It is a happy number.

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 102021222211 - 2⁵ = 102021222179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102021222221) 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, 505055455 + ... + 505055656.

It is an arithmetic number, because the mean of its divisors is an integer number (25757833356).

Almost surely, 2^102021222211 is an apocalyptic number.

102021222211 is a deficient number, since it is larger than the sum of its proper divisors (1010111213).

102021222211 is a wasteful number, since it uses less digits than its factorization.

102021222211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1010111212.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102021222211 its reverse (112222120201), we get a palindrome (214243342412).

The spelling of 102021222211 in words is "one hundred two billion, twenty-one million, two hundred twenty-two thousand, two hundred eleven".