102221111100220 has 96 divisors (see below), whose sum is σ = 247103563069440. Its totient is φ = 34793983365120.

The previous prime is 102221111100217. The next prime is 102221111100421. The reversal of 102221111100220 is 22001111122201.

It is a junction number, because it is equal to n+sod(n) for n = 102221111100194 and 102221111100203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 803264637 + ... + 803391883.

It is an arithmetic number, because the mean of its divisors is an integer number (2573995448640).

Almost surely, 2^{102221111100220} is an apocalyptic number.

102221111100220 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 102221111100220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (123551781534720).

102221111100220 is an abundant number, since it is smaller than the sum of its proper divisors (144882451969220).

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

102221111100220 is a wasteful number, since it uses less digits than its factorization.

102221111100220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168683 (or 168681 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 102221111100220 its reverse (22001111122201), we get a palindrome (124222222222421).

The spelling of 102221111100220 in words is "one hundred two trillion, two hundred twenty-one billion, one hundred eleven million, one hundred thousand, two hundred twenty".