2121012227 has 2 divisors, whose sum is σ = 2121012228. Its totient is φ = 2121012226.

The previous prime is 2121012211. The next prime is 2121012307. The reversal of 2121012227 is 7222101212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121012227 - 2⁴ = 2121012211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2121012199 and 2121012208.

It is not a weakly prime, because it can be changed into another prime (2121012727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060506113 + 1060506114.

It is an arithmetic number, because the mean of its divisors is an integer number (1060506114).

Almost surely, 2^2121012227 is an apocalyptic number.

2121012227 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121012227 is an equidigital number, since it uses as much as digits as its factorization.

2121012227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

The square root of 2121012227 is about 46054.4485039176. The cubic root of 2121012227 is about 1284.8360809748.

Adding to 2121012227 its reverse (7222101212), we get a palindrome (9343113439).

The spelling of 2121012227 in words is "two billion, one hundred twenty-one million, twelve thousand, two hundred twenty-seven".