2121001033201 has 8 divisors (see below), whose sum is σ = 2177995996904. Its totient is φ = 2064722987520.

The previous prime is 2121001033171. The next prime is 2121001033243. The reversal of 2121001033201 is 1023301001212.

It can be written as a sum of positive squares in 4 ways, for example, as 233674593201 + 1887326440000 = 483399^2 + 1373800^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121001033201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121001033001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179223510 + ... + 179235343.

It is an arithmetic number, because the mean of its divisors is an integer number (272249499613).

Almost surely, 2^{2121001033201} is an apocalyptic number.

It is an amenable number.

2121001033201 is a deficient number, since it is larger than the sum of its proper divisors (56994963703).

2121001033201 is an equidigital number, since it uses as much as digits as its factorization.

2121001033201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358459011.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2121001033201 its reverse (1023301001212), we get a palindrome (3144302034413).

The spelling of 2121001033201 in words is "two trillion, one hundred twenty-one billion, one million, thirty-three thousand, two hundred one".