11001001010220 has 192 divisors, whose sum is σ = 36877735520640. Its totient is φ = 2706492773376.

The previous prime is 11001001010191. The next prime is 11001001010221. The reversal of 11001001010220 is 2201010010011.

It is a happy number.

It is a super-2 number, since 2×11001001010220² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (11001001010221) 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, 12759094 + ... + 13593986.

It is an arithmetic number, because the mean of its divisors is an integer number (192071539170).

Almost surely, 2^{11001001010220} is an apocalyptic number.

11001001010220 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 11001001010220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18438867760320).

11001001010220 is an abundant number, since it is smaller than the sum of its proper divisors (25876734510420).

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

11001001010220 is a wasteful number, since it uses less digits than its factorization.

11001001010220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836801 (or 836793 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 11001001010220 its reverse (2201010010011), we get a palindrome (13202011020231).

The spelling of 11001001010220 in words is "eleven trillion, one billion, one million, ten thousand, two hundred twenty".