2101004121 has 16 divisors (see below), whose sum is σ = 2846083968. Its totient is φ = 1378464000.

The previous prime is 2101004119. The next prime is 2101004159. The reversal of 2101004121 is 1214001012.

It is a happy number.

It is not a de Polignac number, because 2101004121 - 2¹ = 2101004119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2101004097 and 2101004106.

It is not an unprimeable number, because it can be changed into a prime (2101004821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29841 + ... + 71361.

It is an arithmetic number, because the mean of its divisors is an integer number (177880248).

Almost surely, 2^2101004121 is an apocalyptic number.

It is an amenable number.

2101004121 is a deficient number, since it is larger than the sum of its proper divisors (745079847).

2101004121 is a wasteful number, since it uses less digits than its factorization.

2101004121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41792.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2101004121 is about 45836.7114985358. The cubic root of 2101004121 is about 1280.7832366606.

Adding to 2101004121 its reverse (1214001012), we get a palindrome (3315005133).

The spelling of 2101004121 in words is "two billion, one hundred one million, four thousand, one hundred twenty-one".