102022222100 has 72 divisors (see below), whose sum is σ = 224011834200. Its totient is φ = 40328081920.

The previous prime is 102022222087. The next prime is 102022222109. The reversal of 102022222100 is 1222220201.

It can be written as a sum of positive squares in 12 ways, for example, as 29430774916 + 72591447184 = 171554^2 + 269428^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102022222109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2917922 + ... + 2952678.

It is an arithmetic number, because the mean of its divisors is an integer number (3111275475).

Almost surely, 2^102022222100 is an apocalyptic number.

102022222100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 102022222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112005917100).

102022222100 is an abundant number, since it is smaller than the sum of its proper divisors (121989612100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102022222100 is a wasteful number, since it uses less digits than its factorization.

102022222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35117 (or 35110 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 102022222100 its reverse (1222220201), we get a palindrome (103244442301).

The spelling of 102022222100 in words is "one hundred two billion, twenty-two million, two hundred twenty-two thousand, one hundred".