1021110020202 has 64 divisors (see below), whose sum is σ = 2176205819904. Its totient is φ = 318300675840.

The previous prime is 1021110020191. The next prime is 1021110020209. The reversal of 1021110020202 is 2020200111201.

It is not an unprimeable number, because it can be changed into a prime (1021110020209) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13024773 + ... + 13102935.

It is an arithmetic number, because the mean of its divisors is an integer number (34003215936).

Almost surely, 2^{1021110020202} is an apocalyptic number.

1021110020202 is an abundant number, since it is smaller than the sum of its proper divisors (1155095799702).

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

1021110020202 is a wasteful number, since it uses less digits than its factorization.

1021110020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79003.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1021110020202 its reverse (2020200111201), we get a palindrome (3041310131403).

Subtracting 1021110020202 from its reverse (2020200111201), we obtain a palindrome (999090090999).

The spelling of 1021110020202 in words is "one trillion, twenty-one billion, one hundred ten million, twenty thousand, two hundred two".