202021020110 has 32 divisors (see below), whose sum is σ = 447554261952. Its totient is φ = 63936322560.

The previous prime is 202021020109. The next prime is 202021020121. The reversal of 202021020110 is 11020120202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 202021020091 and 202021020100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110999651 + ... + 111001470.

It is an arithmetic number, because the mean of its divisors is an integer number (13986070686).

Almost surely, 2^202021020110 is an apocalyptic number.

202021020110 is an abundant number, since it is smaller than the sum of its proper divisors (245533241842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

202021020110 is a wasteful number, since it uses less digits than its factorization.

202021020110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222001148.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202021020110 its reverse (11020120202), we get a palindrome (213041140312).

The spelling of 202021020110 in words is "two hundred two billion, twenty-one million, twenty thousand, one hundred ten".