20011213330000 has 100 divisors (see below), whose sum is σ = 49112837351908. Its totient is φ = 7894834560000.

The previous prime is 20011213329979. The next prime is 20011213330019. The reversal of 20011213330000 is 3331211002.

It can be written as a sum of positive squares in 10 ways, for example, as 7502909852736 + 12508303477264 = 2739144^2 + 3536708^2 .

It is a tau number, because it is divible by the number of its divisors (100).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 12976311 + ... + 14436310.

Almost surely, 2^{20011213330000} is an apocalyptic number.

20011213330000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20011213330000 is an abundant number, since it is smaller than the sum of its proper divisors (29101624021908).

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

20011213330000 is an equidigital number, since it uses as much as digits as its factorization.

20011213330000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27412722 (or 27412701 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20011213330000 its reverse (3331211002), we get a palindrome (20014544541002).

The spelling of 20011213330000 in words is "twenty trillion, eleven billion, two hundred thirteen million, three hundred thirty thousand".