201012020210221 has 4 divisors (see below), whose sum is σ = 219285840229344. Its totient is φ = 182738200191100.

The previous prime is 201012020210207. The next prime is 201012020210231. The reversal of 201012020210221 is 122012020210102.

It is a happy number.

201012020210221 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.

It is a cyclic number.

It is not a de Polignac number, because 201012020210221 - 2²¹ = 201012018113069 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201012020210195 and 201012020210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201012020210231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9136910009545 + ... + 9136910009566.

It is an arithmetic number, because the mean of its divisors is an integer number (54821460057336).

Almost surely, 2^{201012020210221} is an apocalyptic number.

It is an amenable number.

201012020210221 is a deficient number, since it is larger than the sum of its proper divisors (18273820019123).

201012020210221 is a wasteful number, since it uses less digits than its factorization.

201012020210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18273820019122.

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

Adding to 201012020210221 its reverse (122012020210102), we get a palindrome (323024040420323).

The spelling of 201012020210221 in words is "two hundred one trillion, twelve billion, twenty million, two hundred ten thousand, two hundred twenty-one".