4221202061 has 2 divisors, whose sum is σ = 4221202062. Its totient is φ = 4221202060.

The previous prime is 4221202033. The next prime is 4221202081. The reversal of 4221202061 is 1602021224.

It is a happy number.

It is an a-pointer prime, because the next prime (4221202081) can be obtained adding 4221202061 to its sum of digits (20).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4096768036 + 124434025 = 64006^2 + 11155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4221202061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4221202031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110601030 + 2110601031.

It is an arithmetic number, because the mean of its divisors is an integer number (2110601031).

Almost surely, 2^4221202061 is an apocalyptic number.

It is an amenable number.

4221202061 is a deficient number, since it is larger than the sum of its proper divisors (1).

4221202061 is an equidigital number, since it uses as much as digits as its factorization.

4221202061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4221202061 is about 64970.7785161914. The cubic root of 4221202061 is about 1616.1390120190.

Adding to 4221202061 its reverse (1602021224), we get a palindrome (5823223285).

The spelling of 4221202061 in words is "four billion, two hundred twenty-one million, two hundred two thousand, sixty-one".