1010202001121 has 4 divisors (see below), whose sum is σ = 1024040384772. Its totient is φ = 996363617472.

The previous prime is 1010202001117. The next prime is 1010202001141. The reversal of 1010202001121 is 1211002020101.

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 345062256400 + 665139744721 = 587420^2 + 815561^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010202001121 - 2² = 1010202001117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010202001141) 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, 6919191716 + ... + 6919191861.

It is an arithmetic number, because the mean of its divisors is an integer number (256010096193).

Almost surely, 2^{1010202001121} is an apocalyptic number.

It is an amenable number.

1010202001121 is a deficient number, since it is larger than the sum of its proper divisors (13838383651).

1010202001121 is an equidigital number, since it uses as much as digits as its factorization.

1010202001121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13838383650.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 1010202001121 its reverse (1211002020101), we get a palindrome (2221204021222).

The spelling of 1010202001121 in words is "one trillion, ten billion, two hundred two million, one thousand, one hundred twenty-one".