102222001020 has 96 divisors (see below), whose sum is σ = 292715781120. Its totient is φ = 26647545600.

The previous prime is 102222001009. The next prime is 102222001043. The reversal of 102222001020 is 20100222201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 102222000987 and 102222001005.

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, 371979 + ... + 585501.

It is an arithmetic number, because the mean of its divisors is an integer number (3049122720).

Almost surely, 2^102222001020 is an apocalyptic number.

102222001020 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 102222001020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (146357890560).

102222001020 is an abundant number, since it is smaller than the sum of its proper divisors (190493780100).

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

102222001020 is a wasteful number, since it uses less digits than its factorization.

102222001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213715 (or 213713 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 102222001020 its reverse (20100222201), we get a palindrome (122322223221).

The spelling of 102222001020 in words is "one hundred two billion, two hundred twenty-two million, one thousand, twenty".