1011222020000 has 60 divisors (see below), whose sum is σ = 2487757901706. Its totient is φ = 404488800000.

The previous prime is 1011222019999. The next prime is 1011222020021. The reversal of 1011222020000 is 202221101.

It is a happy number.

It can be written as a sum of positive squares in 5 ways, for example, as 190958512144 + 820263507856 = 436988^2 + 905684^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 25260551 + ... + 25300550.

Almost surely, 2^{1011222020000} is an apocalyptic number.

1011222020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1011222020000 is an abundant number, since it is smaller than the sum of its proper divisors (1476535881706).

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

1011222020000 is an frugal number, since it uses more digits than its factorization.

1011222020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50561131 (or 50561108 counting only the distinct ones).

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

Adding to 1011222020000 its reverse (202221101), we get a palindrome (1011424241101).

The spelling of 1011222020000 in words is "one trillion, eleven billion, two hundred twenty-two million, twenty thousand".