202121000111210 has 16 divisors (see below), whose sum is σ = 363822724839816. Its totient is φ = 80847305680128.

The previous prime is 202121000111201. The next prime is 202121000111213. The reversal of 202121000111210 is 12111000121202.

It can be written as a sum of positive squares in 4 ways, for example, as 201739781541169 + 381218570041 = 14203513^2 + 617429^2 .

It is not an unprimeable number, because it can be changed into a prime (202121000111213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136019627 + ... + 137497566.

Almost surely, 2^{202121000111210} is an apocalyptic number.

202121000111210 is a deficient number, since it is larger than the sum of its proper divisors (161701724728606).

202121000111210 is a wasteful number, since it uses less digits than its factorization.

202121000111210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273591097.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 202121000111210 its reverse (12111000121202), we get a palindrome (214232000232412).

The spelling of 202121000111210 in words is "two hundred two trillion, one hundred twenty-one billion, one hundred eleven thousand, two hundred ten".