11101011211020 has 96 divisors (see below), whose sum is σ = 31264958612160. Its totient is φ = 2942963875840.

The previous prime is 11101011211013. The next prime is 11101011211021. The reversal of 11101011211020 is 2011211010111.

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 = 11101011210987 and 11101011211005.

It is not an unprimeable number, because it can be changed into a prime (11101011211021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8341786 + ... + 9580574.

It is an arithmetic number, because the mean of its divisors is an integer number (325676652210).

Almost surely, 2^{11101011211020} is an apocalyptic number.

11101011211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11101011211020 is an abundant number, since it is smaller than the sum of its proper divisors (20163947401140).

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

11101011211020 is a wasteful number, since it uses less digits than its factorization.

11101011211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1239675 (or 1239673 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 11101011211020 its reverse (2011211010111), we get a palindrome (13112222221131).

The spelling of 11101011211020 in words is "eleven trillion, one hundred one billion, eleven million, two hundred eleven thousand, twenty".