11311220020000 has 60 divisors (see below), whose sum is σ = 27827297981406. Its totient is φ = 4524488000000.

The previous prime is 11311220019971. The next prime is 11311220020019. The reversal of 11311220020000 is 2002211311.

It can be written as a sum of positive squares in 5 ways, for example, as 837012733456 + 10474207286544 = 914884^2 + 3236388^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 282760501 + ... + 282800500.

Almost surely, 2^{11311220020000} is an apocalyptic number.

11311220020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311220020000 is an abundant number, since it is smaller than the sum of its proper divisors (16516077961406).

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

11311220020000 is an frugal number, since it uses more digits than its factorization.

11311220020000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565561031 (or 565561008 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11311220020000 its reverse (2002211311), we get a palindrome (11313222231311).

The spelling of 11311220020000 in words is "eleven trillion, three hundred eleven billion, two hundred twenty million, twenty thousand".