2001121219073 has 2 divisors, whose sum is σ = 2001121219074. Its totient is φ = 2001121219072.

The previous prime is 2001121219063. The next prime is 2001121219109. The reversal of 2001121219073 is 3709121211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1942408052209 + 58713166864 = 1393703^2 + 242308^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001121219073 - 2³⁰ = 2000047477249 is a prime.

It is a super-2 number, since 2×2001121219073² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2001121219033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000560609536 + 1000560609537.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560609537).

Almost surely, 2^{2001121219073} is an apocalyptic number.

It is an amenable number.

2001121219073 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001121219073 is an equidigital number, since it uses as much as digits as its factorization.

2001121219073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 29.

The spelling of 2001121219073 in words is "two trillion, one billion, one hundred twenty-one million, two hundred nineteen thousand, seventy-three".