222120201001 has 2 divisors, whose sum is σ = 222120201002.
Its totient is φ = 222120201000.
The previous prime is 222120200993. The next prime is 222120201073. The reversal of 222120201001 is 100102021222.
Adding to 222120201001 its reverse (100102021222), we get a palindrome (322222222223).
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 219169104025 + 2951096976 = 468155^2 + 54324^2
It is a cyclic number.
It is not a de Polignac number, because 222120201001 - 23 = 222120200993 is a prime.
It is not a weakly prime, because it can be changed into another prime (222120201101) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111060100500 + 111060100501.
It is an arithmetic number, because the mean of its divisors is an integer number (111060100501).
Almost surely, 2222120201001 is an apocalyptic number.
It is an amenable number.
222120201001 is a deficient number, since it is larger than the sum of its proper divisors (1).
222120201001 is an equidigital number, since it uses as much as digits as its factorization.
222120201001 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 13.
The spelling of 222120201001 in words is "two hundred twenty-two billion, one hundred twenty million, two hundred one thousand, one".