1021100020202 has 8 divisors (see below), whose sum is σ = 1535649117696. Its totient is φ = 509216980972.

The previous prime is 1021100020159. The next prime is 1021100020211. The reversal of 1021100020202 is 2020200011201.

It is a happy number.

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, 666513608 + ... + 666515139.

It is an arithmetic number, because the mean of its divisors is an integer number (191956139712).

Almost surely, 2^{1021100020202} is an apocalyptic number.

1021100020202 is a deficient number, since it is larger than the sum of its proper divisors (514549097494).

1021100020202 is a wasteful number, since it uses less digits than its factorization.

1021100020202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333029132.

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

Adding to 1021100020202 its reverse (2020200011201), we get a palindrome (3041300031403).

Subtracting 1021100020202 from its reverse (2020200011201), we obtain a palindrome (999099990999).

The spelling of 1021100020202 in words is "one trillion, twenty-one billion, one hundred million, twenty thousand, two hundred two".