2001120011129 has 2 divisors, whose sum is σ = 2001120011130. Its totient is φ = 2001120011128.

The previous prime is 2001120011089. The next prime is 2001120011141. The reversal of 2001120011129 is 9211100211002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1971440646400 + 29679364729 = 1404080^2 + 172277^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001120011129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001120011129.

It is not a weakly prime, because it can be changed into another prime (2001120011329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000560005564 + 1000560005565.

It is an arithmetic number, because the mean of its divisors is an integer number (1000560005565).

Almost surely, 2^{2001120011129} is an apocalyptic number.

It is an amenable number.

2001120011129 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001120011129 is an equidigital number, since it uses as much as digits as its factorization.

2001120011129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 2001120011129 in words is "two trillion, one billion, one hundred twenty million, eleven thousand, one hundred twenty-nine".