201602060021 has 4 divisors (see below), whose sum is σ = 201656536044. Its totient is φ = 201547584000.

The previous prime is 201602059999. The next prime is 201602060083. The reversal of 201602060021 is 120060206102.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 120060206102 = 2 ⋅60030103051.

It can be written as a sum of positive squares in 2 ways, for example, as 162881659396 + 38720400625 = 403586^2 + 196775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201602060021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201602059975 and 201602060002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201602066021) 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, 27232460 + ... + 27239861.

It is an arithmetic number, because the mean of its divisors is an integer number (50414134011).

Almost surely, 2^201602060021 is an apocalyptic number.

It is an amenable number.

201602060021 is a deficient number, since it is larger than the sum of its proper divisors (54476023).

201602060021 is an equidigital number, since it uses as much as digits as its factorization.

201602060021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54476022.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 201602060021 its reverse (120060206102), we get a palindrome (321662266123).

The spelling of 201602060021 in words is "two hundred one billion, six hundred two million, sixty thousand, twenty-one".