2010215121 has 4 divisors (see below), whose sum is σ = 2680286832. Its totient is φ = 1340143412.

The previous prime is 2010215113. The next prime is 2010215147. The reversal of 2010215121 is 1215120102.

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 a cyclic number.

It is not a de Polignac number, because 2010215121 - 2³ = 2010215113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2010215121.

It is not an unprimeable number, because it can be changed into a prime (2010215161) 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, 335035851 + ... + 335035856.

It is an arithmetic number, because the mean of its divisors is an integer number (670071708).

Almost surely, 2^2010215121 is an apocalyptic number.

It is an amenable number.

2010215121 is a deficient number, since it is larger than the sum of its proper divisors (670071711).

2010215121 is an equidigital number, since it uses as much as digits as its factorization.

2010215121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670071710.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 2010215121 is about 44835.4226142678. The cubic root of 2010215121 is about 1262.0624492426.

Adding to 2010215121 its reverse (1215120102), we get a palindrome (3225335223).

The spelling of 2010215121 in words is "two billion, ten million, two hundred fifteen thousand, one hundred twenty-one".