21222230112002 has 16 divisors (see below), whose sum is σ = 31855455832824. Its totient is φ = 10603747392000.

The previous prime is 21222230111977. The next prime is 21222230112011. The reversal of 21222230112002 is 20021103222212.

It can be written as a sum of positive squares in 4 ways, for example, as 20816689125961 + 405540986041 = 4562531^2 + 636821^2 .

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, 16034252 + ... + 17307272.

Almost surely, 2^{21222230112002} is an apocalyptic number.

21222230112002 is a deficient number, since it is larger than the sum of its proper divisors (10633225720822).

21222230112002 is a wasteful number, since it uses less digits than its factorization.

21222230112002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278805.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21222230112002 its reverse (20021103222212), we get a palindrome (41243333334214).

The spelling of 21222230112002 in words is "twenty-one trillion, two hundred twenty-two billion, two hundred thirty million, one hundred twelve thousand, two".