202121020020101 has 16 divisors (see below), whose sum is σ = 248784589740288. Its totient is φ = 159906905308800.

The previous prime is 202121020020091. The next prime is 202121020020103. The reversal of 202121020020101 is 101020020121202.

It is not a de Polignac number, because 202121020020101 - 2¹⁰ = 202121020019077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202121020020103) 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, 89311145 + ... + 91546286.

It is an arithmetic number, because the mean of its divisors is an integer number (15549036858768).

Almost surely, 2^{202121020020101} is an apocalyptic number.

It is an amenable number.

202121020020101 is a deficient number, since it is larger than the sum of its proper divisors (46663569720187).

202121020020101 is a wasteful number, since it uses less digits than its factorization.

202121020020101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180869732.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202121020020101 its reverse (101020020121202), we get a palindrome (303141040141303).

The spelling of 202121020020101 in words is "two hundred two trillion, one hundred twenty-one billion, twenty million, twenty thousand, one hundred one".