11001030031220 has 24 divisors (see below), whose sum is σ = 23185564387944. Its totient is φ = 4384526046336.

The previous prime is 11001030031207. The next prime is 11001030031231. The reversal of 11001030031220 is 2213003010011.

It can be written as a sum of positive squares in 4 ways, for example, as 57253004176 + 10943777027044 = 239276^2 + 3308138^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11001030031195 and 11001030031204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 992867207 + ... + 992878286.

It is an arithmetic number, because the mean of its divisors is an integer number (966065182831).

Almost surely, 2^{11001030031220} is an apocalyptic number.

11001030031220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11001030031220 is an abundant number, since it is smaller than the sum of its proper divisors (12184534356724).

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

11001030031220 is a wasteful number, since it uses less digits than its factorization.

11001030031220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1985745779 (or 1985745777 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 11001030031220 its reverse (2213003010011), we get a palindrome (13214033041231).

The spelling of 11001030031220 in words is "eleven trillion, one billion, thirty million, thirty-one thousand, two hundred twenty".