101201010121 has 2 divisors, whose sum is σ = 101201010122. Its totient is φ = 101201010120.

The previous prime is 101201010077. The next prime is 101201010199. The reversal of 101201010121 is 121010102101.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100385050896 + 815959225 = 316836^2 + 28565^2 .

It is a cyclic number.

It is not a de Polignac number, because 101201010121 - 2¹⁹ = 101200485833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101201010098 and 101201010107.

It is not a weakly prime, because it can be changed into another prime (101201010721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50600505060 + 50600505061.

It is an arithmetic number, because the mean of its divisors is an integer number (50600505061).

Almost surely, 2^101201010121 is an apocalyptic number.

It is an amenable number.

101201010121 is a deficient number, since it is larger than the sum of its proper divisors (1).

101201010121 is an equidigital number, since it uses as much as digits as its factorization.

101201010121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 101201010121 its reverse (121010102101), we get a palindrome (222211112222).

The spelling of 101201010121 in words is "one hundred one billion, two hundred one million, ten thousand, one hundred twenty-one".