202121021020211 has 8 divisors (see below), whose sum is σ = 202287324625920. Its totient is φ = 201954738485448.

The previous prime is 202121021020097. The next prime is 202121021020249. The reversal of 202121021020211 is 112020120121202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 202121021020211 - 2¹⁸ = 202121020758067 is a prime.

It is a super-2 number, since 2×202121021020211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202121021020211.

It is not an unprimeable number, because it can be changed into a prime (202121021020411) 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 7 ways as a sum of consecutive naturals, for example, 13953800 + ... + 24473466.

It is an arithmetic number, because the mean of its divisors is an integer number (25285915578240).

Almost surely, 2^{202121021020211} is an apocalyptic number.

202121021020211 is a deficient number, since it is larger than the sum of its proper divisors (166303605709).

202121021020211 is a wasteful number, since it uses less digits than its factorization.

202121021020211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10535473.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 202121021020211 its reverse (112020120121202), we get a palindrome (314141141141413).

The spelling of 202121021020211 in words is "two hundred two trillion, one hundred twenty-one billion, twenty-one million, twenty thousand, two hundred eleven".