21022002222201 has 12 divisors (see below), whose sum is σ = 30583568382640. Its totient is φ = 13913843196600.

The previous prime is 21022002222161. The next prime is 21022002222209. The reversal of 21022002222201 is 10222220022012.

21022002222201 is a `hidden beast` number, since 2 + 1 + 0 + 220 + 0 + 222 + 220 + 1 = 666.

It is not a de Polignac number, because 21022002222201 - 2¹³ = 21022002214009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21022002222209) 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 11 ways as a sum of consecutive naturals, for example, 8402077975 + ... + 8402080476.

Almost surely, 2^{21022002222201} is an apocalyptic number.

It is an amenable number.

21022002222201 is a deficient number, since it is larger than the sum of its proper divisors (9561566160439).

21022002222201 is a wasteful number, since it uses less digits than its factorization.

21022002222201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16804158596 (or 16804158593 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 21022002222201 its reverse (10222220022012), we get a palindrome (31244222244213).

The spelling of 21022002222201 in words is "twenty-one trillion, twenty-two billion, two million, two hundred twenty-two thousand, two hundred one".