2120211601 has 2 divisors, whose sum is σ = 2120211602. Its totient is φ = 2120211600.

The previous prime is 2120211529. The next prime is 2120211617. The reversal of 2120211601 is 1061120212.

It is an a-pointer prime, because the next prime (2120211617) can be obtained adding 2120211601 to its sum of digits (16).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1725156225 + 395055376 = 41535^2 + 19876^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2120211601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2120211641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060105800 + 1060105801.

It is an arithmetic number, because the mean of its divisors is an integer number (1060105801).

Almost surely, 2^2120211601 is an apocalyptic number.

It is an amenable number.

2120211601 is a deficient number, since it is larger than the sum of its proper divisors (1).

2120211601 is an equidigital number, since it uses as much as digits as its factorization.

2120211601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 2120211601 is about 46045.7555155739. The cubic root of 2120211601 is about 1284.6743967534.

Adding to 2120211601 its reverse (1061120212), we get a palindrome (3181331813).

The spelling of 2120211601 in words is "two billion, one hundred twenty million, two hundred eleven thousand, six hundred one".