1001020101 has 8 divisors (see below), whose sum is σ = 1377748224. Its totient is φ = 645819360.

The previous prime is 1001020093. The next prime is 1001020109. The reversal of 1001020101 is 1010201001.

It is an interprime number because it is at equal distance from previous prime (1001020093) and next prime (1001020109).

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

It is not a de Polignac number, because 1001020101 - 2³ = 1001020093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1001020101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5381736 + ... + 5381921.

It is an arithmetic number, because the mean of its divisors is an integer number (172218528).

Almost surely, 2^1001020101 is an apocalyptic number.

It is an amenable number.

1001020101 is a deficient number, since it is larger than the sum of its proper divisors (376728123).

1001020101 is a wasteful number, since it uses less digits than its factorization.

1001020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10763691.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 1001020101 is about 31638.9017034410. The cubic root of 1001020101 is about 1000.3399181093.

Adding to 1001020101 its reverse (1010201001), we get a palindrome (2011221102).

Subtracting 1001020101 from its reverse (1010201001), we obtain a square (9180900 = 3030²).

It can be divided in two parts, 100 and 1020101, that added together give a palindrome (1020201).

The spelling of 1001020101 in words is "one billion, one million, twenty thousand, one hundred one".