1000221022000 has 80 divisors (see below), whose sum is σ = 2474779630752. Its totient is φ = 390783993600.

The previous prime is 1000221021991. The next prime is 1000221022007. The reversal of 1000221022000 is 2201220001.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (1000221022007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5729239 + ... + 5901238.

Almost surely, 2^{1000221022000} is an apocalyptic number.

1000221022000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000221022000 is an abundant number, since it is smaller than the sum of its proper divisors (1474558608752).

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

1000221022000 is a wasteful number, since it uses less digits than its factorization.

1000221022000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11630543 (or 11630527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 1000221022000 its reverse (2201220001), we get a palindrome (1002422242001).

The spelling of 1000221022000 in words is "one trillion, two hundred twenty-one million, twenty-two thousand".