1002000021222 has 64 divisors (see below), whose sum is σ = 2125654433280. Its totient is φ = 314244209664.

The previous prime is 1002000021167. The next prime is 1002000021241. The reversal of 1002000021222 is 2221200002001.

It is a junction number, because it is equal to n+sod(n) for n = 1002000021198 and 1002000021207.

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, 1952304 + ... + 2411532.

It is an arithmetic number, because the mean of its divisors is an integer number (33213350520).

Almost surely, 2^{1002000021222} is an apocalyptic number.

1002000021222 is an abundant number, since it is smaller than the sum of its proper divisors (1123654412058).

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

1002000021222 is a wasteful number, since it uses less digits than its factorization.

1002000021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459517.

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

Adding to 1002000021222 its reverse (2221200002001), we get a palindrome (3223200023223).

The spelling of 1002000021222 in words is "one trillion, two billion, twenty-one thousand, two hundred twenty-two".