10111021001 has 8 divisors (see below), whose sum is σ = 10324352424. Its totient is φ = 9899712000.

The previous prime is 10111020991. The next prime is 10111021003. The reversal of 10111021001 is 10012011101.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2864925625 + 7246095376 = 53525^2 + 85124^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10111021001 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10111021001.

It is not an unprimeable number, because it can be changed into a prime (10111021003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495500 + ... + 515501.

It is an arithmetic number, because the mean of its divisors is an integer number (1290544053).

Almost surely, 2^10111021001 is an apocalyptic number.

It is an amenable number.

10111021001 is a deficient number, since it is larger than the sum of its proper divisors (213331423).

10111021001 is a wasteful number, since it uses less digits than its factorization.

10111021001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1011211.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 10111021001 its reverse (10012011101), we get a palindrome (20123032102).

The spelling of 10111021001 in words is "ten billion, one hundred eleven million, twenty-one thousand, one".