201202222121221 has 32 divisors (see below), whose sum is σ = 216574364160000. Its totient is φ = 186358010644800.

The previous prime is 201202222121171. The next prime is 201202222121269. The reversal of 201202222121221 is 122121222202102.

201202222121221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 201202222121221 - 2⁹ = 201202222120709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201202222121192 and 201202222121201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202222121281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318078760 + ... + 318710686.

It is an arithmetic number, because the mean of its divisors is an integer number (6767948880000).

Almost surely, 2^{201202222121221} is an apocalyptic number.

It is an amenable number.

201202222121221 is a deficient number, since it is larger than the sum of its proper divisors (15372142038779).

201202222121221 is a wasteful number, since it uses less digits than its factorization.

201202222121221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 634129.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 201202222121221 its reverse (122121222202102), we get a palindrome (323323444323323).

The spelling of 201202222121221 in words is "two hundred one trillion, two hundred two billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred twenty-one".