2010100121 has 4 divisors (see below), whose sum is σ = 2043052644. Its totient is φ = 1977147600.

The previous prime is 2010100067. The next prime is 2010100123. The reversal of 2010100121 is 1210010102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 754106521 + 1255993600 = 27461^2 + 35440^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2010100121 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2010100099 and 2010100108.

It is not an unprimeable number, because it can be changed into a prime (2010100123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16476170 + ... + 16476291.

It is an arithmetic number, because the mean of its divisors is an integer number (510763161).

Almost surely, 2^2010100121 is an apocalyptic number.

It is an amenable number.

2010100121 is a deficient number, since it is larger than the sum of its proper divisors (32952523).

2010100121 is an equidigital number, since it uses as much as digits as its factorization.

2010100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32952522.

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 2010100121 is about 44834.1401278089. The cubic root of 2010100121 is about 1262.0383821751.

Adding to 2010100121 its reverse (1210010102), we get a palindrome (3220110223).

The spelling of 2010100121 in words is "two billion, ten million, one hundred thousand, one hundred twenty-one".