11220010111020 has 192 divisors, whose sum is σ = 32829878793600. Its totient is φ = 2859464294400.

The previous prime is 11220010111019. The next prime is 11220010111021. The reversal of 11220010111020 is 2011101002211.

It is an interprime number because it is at equal distance from previous prime (11220010111019) and next prime (11220010111021).

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 = 11220010110987 and 11220010111005.

It is not an unprimeable number, because it can be changed into a prime (11220010111021) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 976581436 + ... + 976592924.

It is an arithmetic number, because the mean of its divisors is an integer number (170988952050).

Almost surely, 2^{11220010111020} is an apocalyptic number.

11220010111020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11220010111020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16414939396800).

11220010111020 is an abundant number, since it is smaller than the sum of its proper divisors (21609868682580).

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

11220010111020 is a wasteful number, since it uses less digits than its factorization.

11220010111020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17188 (or 17186 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 11220010111020 its reverse (2011101002211), we get a palindrome (13231111113231).

The spelling of 11220010111020 in words is "eleven trillion, two hundred twenty billion, ten million, one hundred eleven thousand, twenty".