2121030012001 has 2 divisors, whose sum is σ = 2121030012002. Its totient is φ = 2121030012000.

The previous prime is 2121030011987. The next prime is 2121030012103. The reversal of 2121030012001 is 1002100301212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1468689491025 + 652340520976 = 1211895^2 + 807676^2 .

It is a cyclic number.

It is not a de Polignac number, because 2121030012001 - 2²¹ = 2121027914849 is a prime.

It is not a weakly prime, because it can be changed into another prime (2121030012401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060515006000 + 1060515006001.

It is an arithmetic number, because the mean of its divisors is an integer number (1060515006001).

Almost surely, 2^{2121030012001} is an apocalyptic number.

It is an amenable number.

2121030012001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121030012001 is an equidigital number, since it uses as much as digits as its factorization.

2121030012001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2121030012001 its reverse (1002100301212), we get a palindrome (3123130313213).

The spelling of 2121030012001 in words is "two trillion, one hundred twenty-one billion, thirty million, twelve thousand, one".