1021210102202 has 4 divisors (see below), whose sum is σ = 1531815153306. Its totient is φ = 510605051100.

The previous prime is 1021210102151. The next prime is 1021210102217. The reversal of 1021210102202 is 2022010121201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 901514169361 + 119695932841 = 949481^2 + 345971^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255302525549 + ... + 255302525552.

Almost surely, 2^{1021210102202} is an apocalyptic number.

1021210102202 is a deficient number, since it is larger than the sum of its proper divisors (510605051104).

1021210102202 is an equidigital number, since it uses as much as digits as its factorization.

1021210102202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510605051103.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1021210102202 its reverse (2022010121201), we get a palindrome (3043220223403).

The spelling of 1021210102202 in words is "one trillion, twenty-one billion, two hundred ten million, one hundred two thousand, two hundred two".