201202211021 has 4 divisors (see below), whose sum is σ = 229945384032. Its totient is φ = 172459038012.

The previous prime is 201202211011. The next prime is 201202211087. The reversal of 201202211021 is 120112202102.

201202211021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120112202102 = 2 ⋅60056101051.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201202211021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 201202210987 and 201202211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202211011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14371586495 + ... + 14371586508.

It is an arithmetic number, because the mean of its divisors is an integer number (57486346008).

Almost surely, 2^201202211021 is an apocalyptic number.

It is an amenable number.

201202211021 is a deficient number, since it is larger than the sum of its proper divisors (28743173011).

201202211021 is an equidigital number, since it uses as much as digits as its factorization.

201202211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28743173010.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 201202211021 its reverse (120112202102), we get a palindrome (321314413123).

The spelling of 201202211021 in words is "two hundred one billion, two hundred two million, two hundred eleven thousand, twenty-one".