102021211120211 has 4 divisors (see below), whose sum is σ = 102041578705800. Its totient is φ = 102000843534624.

The previous prime is 102021211120193. The next prime is 102021211120243. The reversal of 102021211120211 is 112021112120201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102021211120211 - 2³⁸ = 101746333213267 is a prime.

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 102021211120211.

It is not an unprimeable number, because it can be changed into a prime (102021211120271) 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, 10183785281 + ... + 10183795298.

It is an arithmetic number, because the mean of its divisors is an integer number (25510394676450).

Almost surely, 2^{102021211120211} is an apocalyptic number.

102021211120211 is a deficient number, since it is larger than the sum of its proper divisors (20367585589).

102021211120211 is an equidigital number, since it uses as much as digits as its factorization.

102021211120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20367585588.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102021211120211 its reverse (112021112120201), we get a palindrome (214042323240412).

The spelling of 102021211120211 in words is "one hundred two trillion, twenty-one billion, two hundred eleven million, one hundred twenty thousand, two hundred eleven".