1002222120 has 32 divisors (see below), whose sum is σ = 3006666720. Its totient is φ = 267259200.

The previous prime is 1002222101. The next prime is 1002222121. The reversal of 1002222120 is 212222001.

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 = 1002222096 and 1002222105.

It is not an unprimeable number, because it can be changed into a prime (1002222121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4175806 + ... + 4176045.

It is an arithmetic number, because the mean of its divisors is an integer number (93958335).

Almost surely, 2^1002222120 is an apocalyptic number.

1002222120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002222120 is an abundant number, since it is smaller than the sum of its proper divisors (2004444600).

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

1002222120 is a wasteful number, since it uses less digits than its factorization.

1002222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8351865 (or 8351861 counting only the distinct ones).

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

The square root of 1002222120 is about 31657.8919070743. The cubic root of 1002222120 is about 1000.7401586966.

Adding to 1002222120 its reverse (212222001), we get a palindrome (1214444121).

The spelling of 1002222120 in words is "one billion, two million, two hundred twenty-two thousand, one hundred twenty".