11100020001220 has 24 divisors (see below), whose sum is σ = 23311962140544. Its totient is φ = 4439642259936.

The previous prime is 11100020001197. The next prime is 11100020001227. The reversal of 11100020001220 is 2210002000111.

11100020001220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 11100020001197 and 11100020001206.

It is not an unprimeable number, because it can be changed into a prime (11100020001227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22609854 + ... + 23095573.

It is an arithmetic number, because the mean of its divisors is an integer number (971331755856).

Almost surely, 2^{11100020001220} is an apocalyptic number.

11100020001220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11100020001220 is an abundant number, since it is smaller than the sum of its proper divisors (12211942139324).

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

11100020001220 is a wasteful number, since it uses less digits than its factorization.

11100020001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45717579 (or 45717577 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 11100020001220 its reverse (2210002000111), we get a palindrome (13310022001331).

The spelling of 11100020001220 in words is "eleven trillion, one hundred billion, twenty million, one thousand, two hundred twenty".