20120212122011 has 2 divisors, whose sum is σ = 20120212122012. Its totient is φ = 20120212122010.

The previous prime is 20120212121981. The next prime is 20120212122037. The reversal of 20120212122011 is 11022121202102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20120212122011 - 2¹⁴ = 20120212105627 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (20120212122071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10060106061005 + 10060106061006.

It is an arithmetic number, because the mean of its divisors is an integer number (10060106061006).

Almost surely, 2^{20120212122011} is an apocalyptic number.

20120212122011 is a deficient number, since it is larger than the sum of its proper divisors (1).

20120212122011 is an equidigital number, since it uses as much as digits as its factorization.

20120212122011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20120212122011 its reverse (11022121202102), we get a palindrome (31142333324113).

The spelling of 20120212122011 in words is "twenty trillion, one hundred twenty billion, two hundred twelve million, one hundred twenty-two thousand, eleven".