2012110201921 has 2 divisors, whose sum is σ = 2012110201922. Its totient is φ = 2012110201920.

The previous prime is 2012110201909. The next prime is 2012110201951. The reversal of 2012110201921 is 1291020112102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1465455513600 + 546654688321 = 1210560^2 + 739361^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012110201921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012110201892 and 2012110201901.

It is not a weakly prime, because it can be changed into another prime (2012110201951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006055100960 + 1006055100961.

It is an arithmetic number, because the mean of its divisors is an integer number (1006055100961).

Almost surely, 2^{2012110201921} is an apocalyptic number.

It is an amenable number.

2012110201921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012110201921 is an equidigital number, since it uses as much as digits as its factorization.

2012110201921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 2012110201921 in words is "two trillion, twelve billion, one hundred ten million, two hundred one thousand, nine hundred twenty-one".