202021100121201 has 16 divisors (see below), whose sum is σ = 269571650143488. Its totient is φ = 134575677046800.

The previous prime is 202021100121161. The next prime is 202021100121229. The reversal of 202021100121201 is 102121001120202.

It is not a de Polignac number, because 202021100121201 - 2¹³ = 202021100113009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (202021100123201) 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 15 ways as a sum of consecutive naturals, for example, 18505386 + ... + 27321996.

It is an arithmetic number, because the mean of its divisors is an integer number (16848228133968).

Almost surely, 2^{202021100121201} is an apocalyptic number.

It is an amenable number.

202021100121201 is a deficient number, since it is larger than the sum of its proper divisors (67550550022287).

202021100121201 is a wasteful number, since it uses less digits than its factorization.

202021100121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8822572.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 202021100121201 its reverse (102121001120202), we get a palindrome (304142101241403).

Subtracting from 202021100121201 its reverse (102121001120202), we obtain a palindrome (99900099000999).

The spelling of 202021100121201 in words is "two hundred two trillion, twenty-one billion, one hundred million, one hundred twenty-one thousand, two hundred one".