11001200221020 has 48 divisors (see below), whose sum is σ = 30901773964320. Its totient is φ = 2924280692736.

The previous prime is 11001200220979. The next prime is 11001200221049. The reversal of 11001200221020 is 2012200210011.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 11001200220987 and 11001200221005.

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 15 ways as a sum of consecutive naturals, for example, 292877925 + ... + 292915484.

It is an arithmetic number, because the mean of its divisors is an integer number (643786957590).

Almost surely, 2^{11001200221020} is an apocalyptic number.

11001200221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001200221020 is an abundant number, since it is smaller than the sum of its proper divisors (19900573743300).

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

11001200221020 is a wasteful number, since it uses less digits than its factorization.

11001200221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 585793734 (or 585793732 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11001200221020 its reverse (2012200210011), we get a palindrome (13013400431031).

The spelling of 11001200221020 in words is "eleven trillion, one billion, two hundred million, two hundred twenty-one thousand, twenty".