102222102011220 has 72 divisors (see below), whose sum is σ = 310085293550760. Its totient is φ = 27258208819200.

The previous prime is 102222102011167. The next prime is 102222102011257. The reversal of 102222102011220 is 22110201222201.

It is a happy number.

102222102011220 is a `hidden beast` number, since 1 + 0 + 22 + 221 + 0 + 201 + 1 + 220 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29654906436 + 102192447104784 = 172206^2 + 10109028^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 102222102011193 and 102222102011202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5770585 + ... + 15418944.

It is an arithmetic number, because the mean of its divisors is an integer number (4306740188205).

Almost surely, 2^{102222102011220} is an apocalyptic number.

102222102011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102222102011220 is an abundant number, since it is smaller than the sum of its proper divisors (207863191539540).

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

102222102011220 is a wasteful number, since it uses less digits than its factorization.

102222102011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21216345 (or 21216340 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102222102011220 its reverse (22110201222201), we get a palindrome (124332303233421).

The spelling of 102222102011220 in words is "one hundred two trillion, two hundred twenty-two billion, one hundred two million, eleven thousand, two hundred twenty".