10020111011001 has 72 divisors (see below), whose sum is σ = 18133099475400. Its totient is φ = 5284904776704.

The previous prime is 10020111010999. The next prime is 10020111011021. The reversal of 10020111011001 is 10011011102001.

10020111011001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 52578031401 + 9967532979600 = 229299^2 + 3157140^2 .

It is not a de Polignac number, because 10020111011001 - 2¹ = 10020111010999 is a prime.

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 (10020111011021) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 78185691 + ... + 78313743.

It is an arithmetic number, because the mean of its divisors is an integer number (251848603825).

Almost surely, 2^{10020111011001} is an apocalyptic number.

It is an amenable number.

10020111011001 is a deficient number, since it is larger than the sum of its proper divisors (8112988464399).

10020111011001 is a wasteful number, since it uses less digits than its factorization.

10020111011001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141735 (or 141725 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

Adding to 10020111011001 its reverse (10011011102001), we get a palindrome (20031122113002).

The spelling of 10020111011001 in words is "ten trillion, twenty billion, one hundred eleven million, eleven thousand, one".