102222211111220 has 12 divisors (see below), whose sum is σ = 214666643333604. Its totient is φ = 40888884444480.

The previous prime is 102222211111219. The next prime is 102222211111243. The reversal of 102222211111220 is 22111112222201.

It can be written as a sum of positive squares in 2 ways, for example, as 60972266208676 + 41249944902544 = 7808474^2 + 6422612^2 .

It is a super-3 number, since 3×102222211111220³ (a number of 43 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 5111110555561 = 102222211111220 / (1 + 0 + 2 + 2 + 2 + 2 + 2 + 1 + 1 + 1 + 1 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 102222211111192 and 102222211111201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2555555277761 + ... + 2555555277800.

It is an arithmetic number, because the mean of its divisors is an integer number (17888886944467).

Almost surely, 2^{102222211111220} is an apocalyptic number.

102222211111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102222211111220 is an abundant number, since it is smaller than the sum of its proper divisors (112444432222384).

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

102222211111220 is a wasteful number, since it uses less digits than its factorization.

102222211111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5111110555570 (or 5111110555568 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 102222211111220 its reverse (22111112222201), we get a palindrome (124333323333421).

The spelling of 102222211111220 in words is "one hundred two trillion, two hundred twenty-two billion, two hundred eleven million, one hundred eleven thousand, two hundred twenty".