202102212232201 has 4 divisors (see below), whose sum is σ = 202102241178772. Its totient is φ = 202102183285632.

The previous prime is 202102212232189. The next prime is 202102212232303. The reversal of 202102212232201 is 102232212201202.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 169140559214025 + 32961653018176 = 13005405^2 + 5741224^2 .

It is a cyclic number.

It is not a de Polignac number, because 202102212232201 - 2⁷ = 202102212232073 is a prime.

It is a super-2 number, since 2×202102212232201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202102212232901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3163441 + ... + 20352193.

It is an arithmetic number, because the mean of its divisors is an integer number (50525560294693).

Almost surely, 2^{202102212232201} is an apocalyptic number.

It is an amenable number.

202102212232201 is a deficient number, since it is larger than the sum of its proper divisors (28946571).

202102212232201 is a wasteful number, since it uses less digits than its factorization.

202102212232201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28946570.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 202102212232201 its reverse (102232212201202), we get a palindrome (304334424433403).

The spelling of 202102212232201 in words is "two hundred two trillion, one hundred two billion, two hundred twelve million, two hundred thirty-two thousand, two hundred one".