102220111111 has 8 divisors (see below), whose sum is σ = 107079506784. Its totient is φ = 97395302400.

The previous prime is 102220111069. The next prime is 102220111129. The reversal of 102220111111 is 111111022201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102220111111 is a prime.

It is a super-2 number, since 2×102220111111² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

102220111111 is a modest number, since divided by 111111 gives 102220 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 102220111091 and 102220111100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102220111211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8640690 + ... + 8652511.

It is an arithmetic number, because the mean of its divisors is an integer number (13384938348).

Almost surely, 2^102220111111 is an apocalyptic number.

102220111111 is a deficient number, since it is larger than the sum of its proper divisors (4859395673).

102220111111 is a wasteful number, since it uses less digits than its factorization.

102220111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17293481.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102220111111 its reverse (111111022201), we get a palindrome (213331133312).

It can be divided in two parts, 1022201 and 11111, that multiplied together give a palindrome (11357675311).

The spelling of 102220111111 in words is "one hundred two billion, two hundred twenty million, one hundred eleven thousand, one hundred eleven".