2012121047 has 2 divisors, whose sum is σ = 2012121048. Its totient is φ = 2012121046.

The previous prime is 2012121031. The next prime is 2012121077. The reversal of 2012121047 is 7401212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012121047 - 2⁴ = 2012121031 is a prime.

It is a super-2 number, since 2×2012121047² = 8097262215560752418, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012121017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006060523 + 1006060524.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060524).

Almost surely, 2^2012121047 is an apocalyptic number.

2012121047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012121047 is an equidigital number, since it uses as much as digits as its factorization.

2012121047 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 2012121047 is about 44856.6722684597. The cubic root of 2012121047 is about 1262.4611856446.

Adding to 2012121047 its reverse (7401212102), we get a palindrome (9413333149).

The spelling of 2012121047 in words is "two billion, twelve million, one hundred twenty-one thousand, forty-seven".