221021000211202 has 8 divisors (see below), whose sum is σ = 331534097260812. Its totient is φ = 110509634457600.

The previous prime is 221021000211149. The next prime is 221021000211203. The reversal of 221021000211202 is 202112000120122.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 220895124976681 + 125875234521 = 14862541^2 + 354789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (221021000211203) 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 in 3 ways as a sum of consecutive naturals, for example, 432504799 + ... + 433015522.

Almost surely, 2^{221021000211202} is an apocalyptic number.

221021000211202 is a deficient number, since it is larger than the sum of its proper divisors (110513097049610).

221021000211202 is a wasteful number, since it uses less digits than its factorization.

221021000211202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865648004.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 221021000211202 its reverse (202112000120122), we get a palindrome (423133000331324).

The spelling of 221021000211202 in words is "two hundred twenty-one trillion, twenty-one billion, two hundred eleven thousand, two hundred two".