222201101021 has 2 divisors, whose sum is σ = 222201101022. Its totient is φ = 222201101020.

The previous prime is 222201100973. The next prime is 222201101033. The reversal of 222201101021 is 120101102222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 171007060900 + 51194040121 = 413530^2 + 226261^2 .

It is a cyclic number.

It is not a de Polignac number, because 222201101021 - 2²² = 222196906717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 222201100987 and 222201101005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (222201101321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111100550510 + 111100550511.

It is an arithmetic number, because the mean of its divisors is an integer number (111100550511).

Almost surely, 2^222201101021 is an apocalyptic number.

It is an amenable number.

222201101021 is a deficient number, since it is larger than the sum of its proper divisors (1).

222201101021 is an equidigital number, since it uses as much as digits as its factorization.

222201101021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 222201101021 its reverse (120101102222), we get a palindrome (342302203243).

The spelling of 222201101021 in words is "two hundred twenty-two billion, two hundred one million, one hundred one thousand, twenty-one".