21222101211202 has 16 divisors (see below), whose sum is σ = 31868558328600. Its totient is φ = 10599249254400.

The previous prime is 21222101211149. The next prime is 21222101211307. The reversal of 21222101211202 is 20211210122212.

It can be written as a sum of positive squares in 4 ways, for example, as 8034679371601 + 13187421839601 = 2834551^2 + 3631449^2 .

It is a super-3 number, since 3×21222101211202³ (a number of 41 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21222101211202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55864702 + ... + 56243302.

Almost surely, 2^{21222101211202} is an apocalyptic number.

21222101211202 is a deficient number, since it is larger than the sum of its proper divisors (10646457117398).

21222101211202 is a wasteful number, since it uses less digits than its factorization.

21222101211202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409701.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 21222101211202 its reverse (20211210122212), we get a palindrome (41433311333414).

The spelling of 21222101211202 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred one million, two hundred eleven thousand, two hundred two".