2120212210001 has 4 divisors (see below), whose sum is σ = 2120545950372. Its totient is φ = 2119878469632.

The previous prime is 2120212209991. The next prime is 2120212210003. The reversal of 2120212210001 is 1000122120212.

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 353769196225 + 1766443013776 = 594785^2 + 1329076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120212210001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2120212210003) 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, 166860656 + ... + 166873361.

It is an arithmetic number, because the mean of its divisors is an integer number (530136487593).

Almost surely, 2^{2120212210001} is an apocalyptic number.

It is an amenable number.

2120212210001 is a deficient number, since it is larger than the sum of its proper divisors (333740371).

2120212210001 is an equidigital number, since it uses as much as digits as its factorization.

2120212210001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333740370.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2120212210001 its reverse (1000122120212), we get a palindrome (3120334330213).

The spelling of 2120212210001 in words is "two trillion, one hundred twenty billion, two hundred twelve million, two hundred ten thousand, one".