202020220102 has 4 divisors (see below), whose sum is σ = 303030330156. Its totient is φ = 101010110050.

The previous prime is 202020220063. The next prime is 202020220109. The reversal of 202020220102 is 201022020202.

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

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202020220109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50505055024 + ... + 50505055027.

It is an arithmetic number, because the mean of its divisors is an integer number (75757582539).

Almost surely, 2^202020220102 is an apocalyptic number.

202020220102 is a deficient number, since it is larger than the sum of its proper divisors (101010110054).

202020220102 is a wasteful number, since it uses less digits than its factorization.

202020220102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101010110053.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 202020220102 its reverse (201022020202), we get a palindrome (403042240304).

The spelling of 202020220102 in words is "two hundred two billion, twenty million, two hundred twenty thousand, one hundred two".