101010010121 has 4 divisors (see below), whose sum is σ = 101094116244. Its totient is φ = 100925904000.

The previous prime is 101010010109. The next prime is 101010010159. The reversal of 101010010121 is 121010010101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 48655536400 + 52354473721 = 220580^2 + 228811^2 .

It is a cyclic number.

It is not a de Polignac number, because 101010010121 - 2¹⁴ = 101009993737 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101010010099 and 101010010108.

It is not an unprimeable number, because it can be changed into a prime (101010015121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42051260 + ... + 42053661.

It is an arithmetic number, because the mean of its divisors is an integer number (25273529061).

Almost surely, 2^101010010121 is an apocalyptic number.

It is an amenable number.

101010010121 is a deficient number, since it is larger than the sum of its proper divisors (84106123).

101010010121 is an equidigital number, since it uses as much as digits as its factorization.

101010010121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84106122.

The product of its (nonzero) digits is 2, while the sum is 8.

Adding to 101010010121 its reverse (121010010101), we get a palindrome (222020020222).

The spelling of 101010010121 in words is "one hundred one billion, ten million, ten thousand, one hundred twenty-one".