10111002001 has 2 divisors, whose sum is σ = 10111002002. Its totient is φ = 10111002000.

The previous prime is 10111001987. The next prime is 10111002029. The reversal of 10111002001 is 10020011101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7625480976 + 2485521025 = 87324^2 + 49855^2 .

It is a cyclic number.

It is not a de Polignac number, because 10111002001 - 2²¹ = 10108904849 is a prime.

It is a super-2 number, since 2×10111002001² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (10111002701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5055501000 + 5055501001.

It is an arithmetic number, because the mean of its divisors is an integer number (5055501001).

Almost surely, 2^10111002001 is an apocalyptic number.

It is an amenable number.

10111002001 is a deficient number, since it is larger than the sum of its proper divisors (1).

10111002001 is an equidigital number, since it uses as much as digits as its factorization.

10111002001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2, while the sum is 7.

Adding to 10111002001 its reverse (10020011101), we get a palindrome (20131013102).

It can be divided in two parts, 1011100 and 2001, that added together give a palindrome (1013101).

The spelling of 10111002001 in words is "ten billion, one hundred eleven million, two thousand, one".