102021212010221 has 24 divisors (see below), whose sum is σ = 120714472794240. Its totient is φ = 85946620197312.

The previous prime is 102021212010163. The next prime is 102021212010227. The reversal of 102021212010221 is 122010212120201.

It is not a de Polignac number, because 102021212010221 - 2¹⁴ = 102021211993837 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 102021212010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021212010227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10138625 + ... + 17516681.

It is an arithmetic number, because the mean of its divisors is an integer number (5029769699760).

Almost surely, 2^{102021212010221} is an apocalyptic number.

It is an amenable number.

102021212010221 is a deficient number, since it is larger than the sum of its proper divisors (18693260784019).

102021212010221 is an equidigital number, since it uses as much as digits as its factorization.

102021212010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7382913 (or 7382906 counting only the distinct ones).

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

Adding to 102021212010221 its reverse (122010212120201), we get a palindrome (224031424130422).

The spelling of 102021212010221 in words is "one hundred two trillion, twenty-one billion, two hundred twelve million, ten thousand, two hundred twenty-one".