102222021204 has 36 divisors (see below), whose sum is σ = 261297871380. Its totient is φ = 33691152000.

The previous prime is 102222021191. The next prime is 102222021221. The reversal of 102222021204 is 402120222201.

It can be written as a sum of positive squares in 2 ways, for example, as 20620385604 + 81601635600 = 143598^2 + 285660^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15949047 + ... + 15955454.

It is an arithmetic number, because the mean of its divisors is an integer number (7258274205).

Almost surely, 2^102222021204 is an apocalyptic number.

It is an amenable number.

102222021204 is an abundant number, since it is smaller than the sum of its proper divisors (159075850176).

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

102222021204 is a wasteful number, since it uses less digits than its factorization.

102222021204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31904600 (or 31904595 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 102222021204 its reverse (402120222201), we get a palindrome (504342243405).

The spelling of 102222021204 in words is "one hundred two billion, two hundred twenty-two million, twenty-one thousand, two hundred four".