2102202021202 has 4 divisors (see below), whose sum is σ = 3153303031806. Its totient is φ = 1051101010600.

The previous prime is 2102202021169. The next prime is 2102202021203. The reversal of 2102202021202 is 2021202022012.

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., 2051428862961 + 50773158241 = 1432281^2 + 225329^2 .

It is not an unprimeable number, because it can be changed into a prime (2102202021203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525550505299 + ... + 525550505302.

Almost surely, 2^{2102202021202} is an apocalyptic number.

2102202021202 is a deficient number, since it is larger than the sum of its proper divisors (1051101010604).

2102202021202 is a wasteful number, since it uses less digits than its factorization.

2102202021202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1051101010603.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2102202021202 its reverse (2021202022012), we get a palindrome (4123404043214).

The spelling of 2102202021202 in words is "two trillion, one hundred two billion, two hundred two million, twenty-one thousand, two hundred two".