102021222111 has 16 divisors (see below), whose sum is σ = 138913573248. Its totient is φ = 66582079200.

The previous prime is 102021222101. The next prime is 102021222139. The reversal of 102021222111 is 111222120201.

It is not a de Polignac number, because 102021222111 - 2¹⁵ = 102021189343 is a prime.

It is a super-2 number, since 2×102021222111² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021222101) 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, 1282461 + ... + 1359686.

It is an arithmetic number, because the mean of its divisors is an integer number (8682098328).

Almost surely, 2^102021222111 is an apocalyptic number.

102021222111 is a deficient number, since it is larger than the sum of its proper divisors (36892351137).

102021222111 is a wasteful number, since it uses less digits than its factorization.

102021222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2642422.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102021222111 its reverse (111222120201), we get a palindrome (213243342312).

The spelling of 102021222111 in words is "one hundred two billion, twenty-one million, two hundred twenty-two thousand, one hundred eleven".