101010120121 has 4 divisors (see below), whose sum is σ = 101017517044. Its totient is φ = 101002723200.

The previous prime is 101010120103. The next prime is 101010120131. The reversal of 101010120121 is 121021010101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 121021010101 = 239 ⋅506364059.

It can be written as a sum of positive squares in 2 ways, for example, as 41999993721 + 59010126400 = 204939^2 + 242920^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010120121 - 2¹³ = 101010111929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101010120098 and 101010120107.

It is not an unprimeable number, because it can be changed into a prime (101010120131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3677940 + ... + 3705301.

It is an arithmetic number, because the mean of its divisors is an integer number (25254379261).

Almost surely, 2^101010120121 is an apocalyptic number.

It is an amenable number.

101010120121 is a deficient number, since it is larger than the sum of its proper divisors (7396923).

101010120121 is an equidigital number, since it uses as much as digits as its factorization.

101010120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7396922.

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

Adding to 101010120121 its reverse (121021010101), we get a palindrome (222031130222).

The spelling of 101010120121 in words is "one hundred one billion, ten million, one hundred twenty thousand, one hundred twenty-one".