11021330501055 has 80 divisors (see below), whose sum is σ = 22916151667200. Its totient is φ = 4963123585728.

The previous prime is 11021330501039. The next prime is 11021330501057. The reversal of 11021330501055 is 55010503312011.

11021330501055 is a `hidden beast` number, since 1 + 102 + 1 + 3 + 3 + 0 + 501 + 0 + 55 = 666.

It is not a de Polignac number, because 11021330501055 - 2⁴ = 11021330501039 is a prime.

It is a super-2 number, since 2×11021330501055² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11021330501057) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28821955 + ... + 29201844.

It is an arithmetic number, because the mean of its divisors is an integer number (286451895840).

Almost surely, 2^{11021330501055} is an apocalyptic number.

11021330501055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11021330501055 is an abundant number, since it is smaller than the sum of its proper divisors (11894821166145).

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

11021330501055 is an equidigital number, since it uses as much as digits as its factorization.

11021330501055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58023890 (or 58023881 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

Adding to 11021330501055 its reverse (55010503312011), we get a palindrome (66031833813066).

The spelling of 11021330501055 in words is "eleven trillion, twenty-one billion, three hundred thirty million, five hundred one thousand, fifty-five".