212202002110021 has 16 divisors (see below), whose sum is σ = 264566908293120. Its totient is φ = 165350101189680.

The previous prime is 212202002110013. The next prime is 212202002110031. The reversal of 212202002110021 is 120011200202212.

It is a happy number.

212202002110021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 212202002110021 - 2³ = 212202002110013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212202002109977 and 212202002110004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212202002110031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11476681 + ... + 23582158.

It is an arithmetic number, because the mean of its divisors is an integer number (16535431768320).

Almost surely, 2^{212202002110021} is an apocalyptic number.

It is an amenable number.

212202002110021 is a deficient number, since it is larger than the sum of its proper divisors (52364906183099).

212202002110021 is a wasteful number, since it uses less digits than its factorization.

212202002110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35137464.

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

Adding to 212202002110021 its reverse (120011200202212), we get a palindrome (332213202312233).

The spelling of 212202002110021 in words is "two hundred twelve trillion, two hundred two billion, two million, one hundred ten thousand, twenty-one".