200221220211021 has 24 divisors (see below), whose sum is σ = 292075167832344. Its totient is φ = 132157733097600.

The previous prime is 200221220211017. The next prime is 200221220211029. The reversal of 200221220211021 is 120112022122002.

It is a happy number.

200221220211021 is a `hidden beast` number, since 200 + 2 + 212 + 20 + 211 + 0 + 21 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13176072372996 + 187045147838025 = 3629886^2 + 13676445^2 .

It is not a de Polignac number, because 200221220211021 - 2² = 200221220211017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200221220210985 and 200221220211003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200221220211029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 82649415 + ... + 85037451.

It is an arithmetic number, because the mean of its divisors is an integer number (12169798659681).

Almost surely, 2^{200221220211021} is an apocalyptic number.

It is an amenable number.

200221220211021 is a deficient number, since it is larger than the sum of its proper divisors (91853947621323).

200221220211021 is a wasteful number, since it uses less digits than its factorization.

200221220211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480381 (or 2480378 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 200221220211021 its reverse (120112022122002), we get a palindrome (320333242333023).

The spelling of 200221220211021 in words is "two hundred trillion, two hundred twenty-one billion, two hundred twenty million, two hundred eleven thousand, twenty-one".