11001201021028 has 12 divisors (see below), whose sum is σ = 19255386608892. Its totient is φ = 5499661989920.

The previous prime is 11001201021011. The next prime is 11001201021029. The reversal of 11001201021028 is 82012010210011.

It can be written as a sum of positive squares in 2 ways, for example, as 3318780349504 + 7682420671524 = 1821752^2 + 2771718^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11001201020996 and 11001201021014.

It is not an unprimeable number, because it can be changed into a prime (11001201021029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234603775 + ... + 234650662.

It is an arithmetic number, because the mean of its divisors is an integer number (1604615550741).

Almost surely, 2^{11001201021028} is an apocalyptic number.

It is an amenable number.

11001201021028 is a deficient number, since it is larger than the sum of its proper divisors (8254185587864).

11001201021028 is a wasteful number, since it uses less digits than its factorization.

11001201021028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469260302 (or 469260300 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 11001201021028 its reverse (82012010210011), we get a palindrome (93013211231039).

The spelling of 11001201021028 in words is "eleven trillion, one billion, two hundred one million, twenty-one thousand, twenty-eight".