2021120122001 has 2 divisors, whose sum is σ = 2021120122002. Its totient is φ = 2021120122000.

The previous prime is 2021120121967. The next prime is 2021120122037. The reversal of 2021120122001 is 1002210211202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1932792282001 + 88327840000 = 1390249^2 + 297200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021120122001 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021120122051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010560061000 + 1010560061001.

It is an arithmetic number, because the mean of its divisors is an integer number (1010560061001).

Almost surely, 2^{2021120122001} is an apocalyptic number.

It is an amenable number.

2021120122001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021120122001 is an equidigital number, since it uses as much as digits as its factorization.

2021120122001 is an odious number, because the sum of its binary digits is odd.

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

Adding to 2021120122001 its reverse (1002210211202), we get a palindrome (3023330333203).

It can be divided in two parts, 20211201 and 22001, that added together give a palindrome (20233202).

The spelling of 2021120122001 in words is "two trillion, twenty-one billion, one hundred twenty million, one hundred twenty-two thousand, one".