2121012012201 has 24 divisors (see below), whose sum is σ = 2913176734080. Its totient is φ = 1372445771424.

The previous prime is 2121012012181. The next prime is 2121012012209. The reversal of 2121012012201 is 1022102101212.

It is not a de Polignac number, because 2121012012201 - 2¹⁵ = 2121011979433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2121012012209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 460470 + ... + 2110463.

It is an arithmetic number, because the mean of its divisors is an integer number (121382363920).

Almost surely, 2^{2121012012201} is an apocalyptic number.

It is an amenable number.

2121012012201 is a deficient number, since it is larger than the sum of its proper divisors (792164721879).

2121012012201 is an equidigital number, since it uses as much as digits as its factorization.

2121012012201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2571133 (or 2571074 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2121012012201 its reverse (1022102101212), we get a palindrome (3143114113413).

The spelling of 2121012012201 in words is "two trillion, one hundred twenty-one billion, twelve million, twelve thousand, two hundred one".