2120021000201 has 4 divisors (see below), whose sum is σ = 2283099538692. Its totient is φ = 1956942461712.

The previous prime is 2120021000191. The next prime is 2120021000213. The reversal of 2120021000201 is 1020001200212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 227605326400 + 1892415673801 = 477080^2 + 1375651^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120021000201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120021000401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81539269226 + ... + 81539269251.

It is an arithmetic number, because the mean of its divisors is an integer number (570774884673).

Almost surely, 2^{2120021000201} is an apocalyptic number.

It is an amenable number.

2120021000201 is a deficient number, since it is larger than the sum of its proper divisors (163078538491).

2120021000201 is a wasteful number, since it uses less digits than its factorization.

2120021000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163078538490.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 2120021000201 its reverse (1020001200212), we get a palindrome (3140022200413).

The spelling of 2120021000201 in words is "two trillion, one hundred twenty billion, twenty-one million, two hundred one", and thus it is an aban number.