1010201022121 has 4 divisors (see below), whose sum is σ = 1013387776452. Its totient is φ = 1007014267792.

The previous prime is 1010201022113. The next prime is 1010201022137. The reversal of 1010201022121 is 1212201020101.

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 27287405721 + 982913616400 = 165189^2 + 991420^2 .

It is a cyclic number.

It is not a de Polignac number, because 1010201022121 - 2³ = 1010201022113 is a prime.

It is a super-2 number, since 2×1010201022121² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1010201022101) 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, 1593376690 + ... + 1593377323.

It is an arithmetic number, because the mean of its divisors is an integer number (253346944113).

Almost surely, 2^{1010201022121} is an apocalyptic number.

It is an amenable number.

1010201022121 is a deficient number, since it is larger than the sum of its proper divisors (3186754331).

1010201022121 is an equidigital number, since it uses as much as digits as its factorization.

1010201022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186754330.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1010201022121 its reverse (1212201020101), we get a palindrome (2222402042222).

The spelling of 1010201022121 in words is "one trillion, ten billion, two hundred one million, twenty-two thousand, one hundred twenty-one".