102221021022021 has 48 divisors (see below), whose sum is σ = 163859502987648. Its totient is φ = 60886887331200.

The previous prime is 102221021021947. The next prime is 102221021022079. The reversal of 102221021022021 is 120220120122201.

It is a happy number.

102221021022021 is a `hidden beast` number, since 1 + 0 + 2 + 2 + 210 + 210 + 220 + 21 = 666.

It is not a de Polignac number, because 102221021022021 - 2¹⁰ = 102221021020997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102221021021985 and 102221021022003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102221021022821) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20709906 + ... + 25166291.

It is an arithmetic number, because the mean of its divisors is an integer number (3413739645576).

Almost surely, 2^{102221021022021} is an apocalyptic number.

102221021022021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

102221021022021 is a deficient number, since it is larger than the sum of its proper divisors (61638481965627).

102221021022021 is a wasteful number, since it uses less digits than its factorization.

102221021022021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45876602 (or 45876599 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 102221021022021 its reverse (120220120122201), we get a palindrome (222441141144222).

The spelling of 102221021022021 in words is "one hundred two trillion, two hundred twenty-one billion, twenty-one million, twenty-two thousand, twenty-one".