2102030121 has 4 divisors (see below), whose sum is σ = 2802706832. Its totient is φ = 1401353412.

The previous prime is 2102030081. The next prime is 2102030123. The reversal of 2102030121 is 1210302012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2102030121 - 2¹⁷ = 2101899049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2102030097 and 2102030106.

It is not an unprimeable number, because it can be changed into a prime (2102030123) 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, 350338351 + ... + 350338356.

It is an arithmetic number, because the mean of its divisors is an integer number (700676708).

Almost surely, 2^2102030121 is an apocalyptic number.

It is an amenable number.

2102030121 is a deficient number, since it is larger than the sum of its proper divisors (700676711).

2102030121 is an equidigital number, since it uses as much as digits as its factorization.

2102030121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700676710.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2102030121 is about 45847.9020348805. The cubic root of 2102030121 is about 1280.9916877436.

Adding to 2102030121 its reverse (1210302012), we get a palindrome (3312332133).

The spelling of 2102030121 in words is "two billion, one hundred two million, thirty thousand, one hundred twenty-one".