2012002121501 has 2 divisors, whose sum is σ = 2012002121502. Its totient is φ = 2012002121500.

The previous prime is 2012002121491. The next prime is 2012002121531. The reversal of 2012002121501 is 1051212002102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1878404561401 + 133597560100 = 1370549^2 + 365510^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012002121501 - 2³⁴ = 1994822252317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012002121501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012002121531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006001060750 + 1006001060751.

It is an arithmetic number, because the mean of its divisors is an integer number (1006001060751).

Almost surely, 2^{2012002121501} is an apocalyptic number.

It is an amenable number.

2012002121501 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012002121501 is an equidigital number, since it uses as much as digits as its factorization.

2012002121501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 2012002121501 its reverse (1051212002102), we get a palindrome (3063214123603).

The spelling of 2012002121501 in words is "two trillion, twelve billion, two million, one hundred twenty-one thousand, five hundred one".