202201101000121 has 4 divisors (see below), whose sum is σ = 202278247550244. Its totient is φ = 202123954450000.

The previous prime is 202201101000113. The next prime is 202201101000257. The reversal of 202201101000121 is 121000101102202.

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 147788053689721 + 54413047310400 = 12156811^2 + 7376520^2 .

It is a cyclic number.

It is not a de Polignac number, because 202201101000121 - 2³ = 202201101000113 is a prime.

It is a super-2 number, since 2×202201101000121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202201101007121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38573271130 + ... + 38573276371.

It is an arithmetic number, because the mean of its divisors is an integer number (50569561887561).

Almost surely, 2^{202201101000121} is an apocalyptic number.

It is an amenable number.

202201101000121 is a deficient number, since it is larger than the sum of its proper divisors (77146550123).

202201101000121 is an equidigital number, since it uses as much as digits as its factorization.

202201101000121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77146550122.

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

Adding to 202201101000121 its reverse (121000101102202), we get a palindrome (323201202102323).

The spelling of 202201101000121 in words is "two hundred two trillion, two hundred one billion, one hundred one million, one hundred twenty-one", and thus it is an aban number.