202021111010 has 32 divisors (see below), whose sum is σ = 364398756480. Its totient is φ = 80639528832.

The previous prime is 202021111009. The next prime is 202021111043. The reversal of 202021111010 is 10111120202.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 202021110982 and 202021111000.

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, 13508357 + ... + 13523303.

It is an arithmetic number, because the mean of its divisors is an integer number (11387461140).

Almost surely, 2^202021111010 is an apocalyptic number.

202021111010 is a deficient number, since it is larger than the sum of its proper divisors (162377645470).

202021111010 is a wasteful number, since it uses less digits than its factorization.

202021111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17690.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 202021111010 its reverse (10111120202), we get a palindrome (212132231212).

The spelling of 202021111010 in words is "two hundred two billion, twenty-one million, one hundred eleven thousand, ten".