1000120101 has 32 divisors (see below), whose sum is σ = 1407931008. Its totient is φ = 630685440.

The previous prime is 1000120091. The next prime is 1000120103. The reversal of 1000120101 is 1010210001.

It is not a de Polignac number, because 1000120101 - 2⁷ = 1000119973 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1000120101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000120103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1512711 + ... + 1513371.

It is an arithmetic number, because the mean of its divisors is an integer number (43997844).

Almost surely, 2^1000120101 is an apocalyptic number.

It is an amenable number.

1000120101 is a deficient number, since it is larger than the sum of its proper divisors (407810907).

1000120101 is a wasteful number, since it uses less digits than its factorization.

1000120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061.

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

The square root of 1000120101 is about 31624.6755082167. The cubic root of 1000120101 is about 1000.0400320641.

Adding to 1000120101 its reverse (1010210001), we get a palindrome (2010330102).

The spelling of 1000120101 in words is "one billion, one hundred twenty thousand, one hundred one".