2121012012011 has 2 divisors, whose sum is σ = 2121012012012. Its totient is φ = 2121012012010.

The previous prime is 2121012011969. The next prime is 2121012012019. The reversal of 2121012012011 is 1102102101212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2121012012011 - 2²² = 2121007817707 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121012012019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060506006005 + 1060506006006.

It is an arithmetic number, because the mean of its divisors is an integer number (1060506006006).

Almost surely, 2^{2121012012011} is an apocalyptic number.

2121012012011 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121012012011 is an equidigital number, since it uses as much as digits as its factorization.

2121012012011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2121012012011 its reverse (1102102101212), we get a palindrome (3223114113223).

The spelling of 2121012012011 in words is "two trillion, one hundred twenty-one billion, twelve million, twelve thousand, eleven".