202020202021210 has 8 divisors (see below), whose sum is σ = 363636363638196. Its totient is φ = 80808080808480.

The previous prime is 202020202021201. The next prime is 202020202021247. The reversal of 202020202021210 is 12120202020202.

It can be written as a sum of positive squares in 2 ways, for example, as 191638976017129 + 10381226004081 = 13843373^2 + 3221991^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10101010101051 + ... + 10101010101070.

Almost surely, 2^{202020202021210} is an apocalyptic number.

202020202021210 is a deficient number, since it is larger than the sum of its proper divisors (161616161616986).

202020202021210 is a wasteful number, since it uses less digits than its factorization.

202020202021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20202020202128.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 202020202021210 its reverse (12120202020202), we get a palindrome (214140404041412).

The spelling of 202020202021210 in words is "two hundred two trillion, twenty billion, two hundred two million, twenty-one thousand, two hundred ten".