21202331212101 has 64 divisors (see below), whose sum is σ = 32279080006656. Its totient is φ = 12263384448000.

The previous prime is 21202331212081. The next prime is 21202331212103. The reversal of 21202331212101 is 10121213320212.

It is not a de Polignac number, because 21202331212101 - 2⁷ = 21202331211973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21202331212103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2332228566 + ... + 2332237656.

It is an arithmetic number, because the mean of its divisors is an integer number (504360625104).

Almost surely, 2^{21202331212101} is an apocalyptic number.

It is an amenable number.

21202331212101 is a deficient number, since it is larger than the sum of its proper divisors (11076748794555).

21202331212101 is a wasteful number, since it uses less digits than its factorization.

21202331212101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13522.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21202331212101 its reverse (10121213320212), we get a palindrome (31323544532313).

The spelling of 21202331212101 in words is "twenty-one trillion, two hundred two billion, three hundred thirty-one million, two hundred twelve thousand, one hundred one".