2001046121 has 2 divisors, whose sum is σ = 2001046122. Its totient is φ = 2001046120.

The previous prime is 2001046097. The next prime is 2001046147. The reversal of 2001046121 is 1216401002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1603602025 + 397444096 = 40045^2 + 19936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2001046121 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001046121.

It is not a weakly prime, because it can be changed into another prime (2001046181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000523060 + 1000523061.

It is an arithmetic number, because the mean of its divisors is an integer number (1000523061).

Almost surely, 2^2001046121 is an apocalyptic number.

It is an amenable number.

2001046121 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001046121 is an equidigital number, since it uses as much as digits as its factorization.

2001046121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2001046121 is about 44733.0540093117. The cubic root of 2001046121 is about 1260.1406832503.

Adding to 2001046121 its reverse (1216401002), we get a palindrome (3217447123).

The spelling of 2001046121 in words is "two billion, one million, forty-six thousand, one hundred twenty-one".