2021210221202 has 4 divisors (see below), whose sum is σ = 3031815331806. Its totient is φ = 1010605110600.

The previous prime is 2021210221201. The next prime is 2021210221207. The reversal of 2021210221202 is 2021220121202.

It is a happy number.

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., 1961341429441 + 59868791761 = 1400479^2 + 244681^2 .

It is not an unprimeable number, because it can be changed into a prime (2021210221201) 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, 505302555299 + ... + 505302555302.

Almost surely, 2^{2021210221202} is an apocalyptic number.

2021210221202 is a deficient number, since it is larger than the sum of its proper divisors (1010605110604).

2021210221202 is a wasteful number, since it uses less digits than its factorization.

2021210221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010605110603.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 2021210221202 its reverse (2021220121202), we get a palindrome (4042430342404).

The spelling of 2021210221202 in words is "two trillion, twenty-one billion, two hundred ten million, two hundred twenty-one thousand, two hundred two".