1001122220000 has 120 divisors (see below), whose sum is σ = 2814755627376. Its totient is φ = 343241856000.

The previous prime is 1001122219997. The next prime is 1001122220011. The reversal of 1001122220000 is 222211001.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 3435437 + ... + 3715436.

Almost surely, 2^{1001122220000} is an apocalyptic number.

1001122220000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1001122220000 is an abundant number, since it is smaller than the sum of its proper divisors (1813633407376).

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

1001122220000 is an frugal number, since it uses more digits than its factorization.

1001122220000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7150910 (or 7150887 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1001122220000 its reverse (222211001), we get a palindrome (1001344431001).

The spelling of 1001122220000 in words is "one trillion, one billion, one hundred twenty-two million, two hundred twenty thousand".