2102021022222 has 96 divisors (see below), whose sum is σ = 4985830583136. Its totient is φ = 634745548800.

The previous prime is 2102021022221. The next prime is 2102021022253. The reversal of 2102021022222 is 2222201202012.

2102021022222 is a `hidden beast` number, since 210 + 2 + 0 + 210 + 22 + 222 = 666.

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 = 2102021022195 and 2102021022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102021022221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 113288898 + ... + 113307450.

It is an arithmetic number, because the mean of its divisors is an integer number (51935735241).

Almost surely, 2^{2102021022222} is an apocalyptic number.

2102021022222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102021022222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2492915291568).

2102021022222 is an abundant number, since it is smaller than the sum of its proper divisors (2883809560914).

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

2102021022222 is a wasteful number, since it uses less digits than its factorization.

2102021022222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20546 (or 20543 counting only the distinct ones).

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

Adding to 2102021022222 its reverse (2222201202012), we get a palindrome (4324222224234).

The spelling of 2102021022222 in words is "two trillion, one hundred two billion, twenty-one million, twenty-two thousand, two hundred twenty-two".