2012121511 has 2 divisors, whose sum is σ = 2012121512. Its totient is φ = 2012121510.

The previous prime is 2012121497. The next prime is 2012121571. The reversal of 2012121511 is 1151212102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2012121511 - 2²³ = 2003732903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012121571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006060755 + 1006060756.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060756).

Almost surely, 2^2012121511 is an apocalyptic number.

2012121511 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012121511 is an equidigital number, since it uses as much as digits as its factorization.

2012121511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40, while the sum is 16.

The square root of 2012121511 is about 44856.6774404882. The cubic root of 2012121511 is about 1262.4612826868.

Adding to 2012121511 its reverse (1151212102), we get a palindrome (3163333613).

The spelling of 2012121511 in words is "two billion, twelve million, one hundred twenty-one thousand, five hundred eleven".