202121010121201 has 4 divisors (see below), whose sum is σ = 202128349062004. Its totient is φ = 202113671180400.

The previous prime is 202121010121189. The next prime is 202121010121243. The reversal of 202121010121201 is 102121010121202.

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 45516409162225 + 156604600958976 = 6746585^2 + 12514176^2 .

It is a cyclic number.

It is not a de Polignac number, because 202121010121201 - 2³¹ = 202118862637553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202121010121501) 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, 3669429090 + ... + 3669484171.

It is an arithmetic number, because the mean of its divisors is an integer number (50532087265501).

Almost surely, 2^{202121010121201} is an apocalyptic number.

It is an amenable number.

202121010121201 is a deficient number, since it is larger than the sum of its proper divisors (7338940803).

202121010121201 is an equidigital number, since it uses as much as digits as its factorization.

202121010121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7338940802.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 202121010121201 its reverse (102121010121202), we get a palindrome (304242020242403).

Subtracting from 202121010121201 its reverse (102121010121202), we obtain a palindrome (99999999999999).

The spelling of 202121010121201 in words is "two hundred two trillion, one hundred twenty-one billion, ten million, one hundred twenty-one thousand, two hundred one".