102222021122 has 16 divisors (see below), whose sum is σ = 174841285752. Its totient is φ = 44404135680.

The previous prime is 102222021073. The next prime is 102222021127. The reversal of 102222021122 is 221120222201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59653666081 + 42568355041 = 244241^2 + 206321^2 .

It is a super-2 number, since 2×102222021122² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 102222021122.

It is not an unprimeable number, because it can be changed into a prime (102222021127) 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, 115635329 + ... + 115636212.

Almost surely, 2^102222021122 is an apocalyptic number.

102222021122 is a deficient number, since it is larger than the sum of its proper divisors (72619264630).

102222021122 is a wasteful number, since it uses less digits than its factorization.

102222021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231271573.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 102222021122 its reverse (221120222201), we get a palindrome (323342243323).

The spelling of 102222021122 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, one hundred twenty-two".