222021101200221 has 12 divisors (see below), whose sum is σ = 320715601669372. Its totient is φ = 148005549547776.

The previous prime is 222021101200207. The next prime is 222021101200273. The reversal of 222021101200221 is 122002101120222.

It is a happy number.

222021101200221 is a `hidden beast` number, since 2 + 220 + 21 + 1 + 0 + 1 + 200 + 221 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 62467066839321 + 159554034360900 = 7903611^2 + 12631470^2 .

It is not a de Polignac number, because 222021101200221 - 2¹³ = 222021101192029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 222021101200194 and 222021101200203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222021101205221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 709661506 + ... + 709974291.

Almost surely, 2^{222021101200221} is an apocalyptic number.

It is an amenable number.

222021101200221 is a deficient number, since it is larger than the sum of its proper divisors (98694500469151).

222021101200221 is a wasteful number, since it uses less digits than its factorization.

222021101200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419653180 (or 1419653177 counting only the distinct ones).

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

Adding to 222021101200221 its reverse (122002101120222), we get a palindrome (344023202320443).

The spelling of 222021101200221 in words is "two hundred twenty-two trillion, twenty-one billion, one hundred one million, two hundred thousand, two hundred twenty-one".