2012021101997 has 2 divisors, whose sum is σ = 2012021101998. Its totient is φ = 2012021101996.

The previous prime is 2012021101877. The next prime is 2012021102057. The reversal of 2012021101997 is 7991011202102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1561852567081 + 450168534916 = 1249741^2 + 670946^2 .

It is a cyclic number.

It is not a de Polignac number, because 2012021101997 - 2¹⁸ = 2012020839853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012021101397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006010550998 + 1006010550999.

It is an arithmetic number, because the mean of its divisors is an integer number (1006010550999).

Almost surely, 2^{2012021101997} is an apocalyptic number.

It is an amenable number.

2012021101997 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012021101997 is an equidigital number, since it uses as much as digits as its factorization.

2012021101997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 35.

The spelling of 2012021101997 in words is "two trillion, twelve billion, twenty-one million, one hundred one thousand, nine hundred ninety-seven".