2120100401 has 2 divisors, whose sum is σ = 2120100402. Its totient is φ = 2120100400.

The previous prime is 2120100391. The next prime is 2120100403. The reversal of 2120100401 is 1040010212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1796064400 + 324036001 = 42380^2 + 18001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120100401 is a prime.

Together with 2120100403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2120100403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060050200 + 1060050201.

It is an arithmetic number, because the mean of its divisors is an integer number (1060050201).

Almost surely, 2^2120100401 is an apocalyptic number.

It is an amenable number.

2120100401 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120100401 is an equidigital number, since it uses as much as digits as its factorization.

2120100401 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2120100401 is about 46044.5480051656. The cubic root of 2120100401 is about 1284.6519369997.

Adding to 2120100401 its reverse (1040010212), we get a palindrome (3160110613).

The spelling of 2120100401 in words is "two billion, one hundred twenty million, one hundred thousand, four hundred one".