102202020021 has 8 divisors (see below), whose sum is σ = 136288423360. Its totient is φ = 68125148352.

The previous prime is 102202019989. The next prime is 102202020029. The reversal of 102202020021 is 120020202201.

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

It is not a de Polignac number, because 102202020021 - 2⁵ = 102202019989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102202019979 and 102202020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102202020029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2357860 + ... + 2400813.

It is an arithmetic number, because the mean of its divisors is an integer number (17036052920).

Almost surely, 2^102202020021 is an apocalyptic number.

It is an amenable number.

102202020021 is a deficient number, since it is larger than the sum of its proper divisors (34086403339).

102202020021 is an equidigital number, since it uses as much as digits as its factorization.

102202020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4765835.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 102202020021 its reverse (120020202201), we get a palindrome (222222222222).

The spelling of 102202020021 in words is "one hundred two billion, two hundred two million, twenty thousand, twenty-one".