2120021103001 has 4 divisors (see below), whose sum is σ = 2120030426404. Its totient is φ = 2120011779600.

The previous prime is 2120021102989. The next prime is 2120021103047. The reversal of 2120021103001 is 1003011200212.

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 1940839059600 + 179182043401 = 1393140^2 + 423299^2 .

It is a cyclic number.

It is not a de Polignac number, because 2120021103001 - 2⁷ = 2120021102873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120021103061) 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 3 ways as a sum of consecutive naturals, for example, 4311870 + ... + 4778311.

It is an arithmetic number, because the mean of its divisors is an integer number (530007606601).

Almost surely, 2^{2120021103001} is an apocalyptic number.

It is an amenable number.

2120021103001 is a deficient number, since it is larger than the sum of its proper divisors (9323403).

2120021103001 is an equidigital number, since it uses as much as digits as its factorization.

2120021103001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9323402.

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

Adding to 2120021103001 its reverse (1003011200212), we get a palindrome (3123032303213).

The spelling of 2120021103001 in words is "two trillion, one hundred twenty billion, twenty-one million, one hundred three thousand, one".