4220100121 has 2 divisors, whose sum is σ = 4220100122. Its totient is φ = 4220100120.

The previous prime is 4220100113. The next prime is 4220100151. The reversal of 4220100121 is 1210010224.

It is a happy number.

4220100121 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3585614400 + 634485721 = 59880^2 + 25189^2 .

It is a cyclic number.

It is not a de Polignac number, because 4220100121 - 2³ = 4220100113 is a prime.

It is not a weakly prime, because it can be changed into another prime (4220100151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2110050060 + 2110050061.

It is an arithmetic number, because the mean of its divisors is an integer number (2110050061).

Almost surely, 2^4220100121 is an apocalyptic number.

It is an amenable number.

4220100121 is a deficient number, since it is larger than the sum of its proper divisors (1).

4220100121 is an equidigital number, since it uses as much as digits as its factorization.

4220100121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 4220100121 is about 64962.2976887363. The cubic root of 4220100121 is about 1615.9983693627.

Adding to 4220100121 its reverse (1210010224), we get a palindrome (5430110345).

The spelling of 4220100121 in words is "four billion, two hundred twenty million, one hundred thousand, one hundred twenty-one".