21202230111002 has 64 divisors (see below), whose sum is σ = 33921122004000. Its totient is φ = 9924300029952.

The previous prime is 21202230110989. The next prime is 21202230111011. The reversal of 21202230111002 is 20011103220212.

It can be written as a sum of positive squares in 16 ways, for example, as 1567130926201 + 19635099184801 = 1251851^2 + 4431151^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54383588 + ... + 54772064.

Almost surely, 2^{21202230111002} is an apocalyptic number.

21202230111002 is a deficient number, since it is larger than the sum of its proper divisors (12718891892998).

21202230111002 is a wasteful number, since it uses less digits than its factorization.

21202230111002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388803.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 21202230111002 its reverse (20011103220212), we get a palindrome (41213333331214).

The spelling of 21202230111002 in words is "twenty-one trillion, two hundred two billion, two hundred thirty million, one hundred eleven thousand, two".