212210222201 has 4 divisors (see below), whose sum is σ = 219527816100. Its totient is φ = 204892628304.

The previous prime is 212210222101. The next prime is 212210222251. The reversal of 212210222201 is 102222012212.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 124733286976 + 87476935225 = 353176^2 + 295765^2 .

It is a cyclic number.

It is not a de Polignac number, because 212210222201 - 2¹⁴ = 212210205817 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 212210222201.

It is not an unprimeable number, because it can be changed into a prime (212210222251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3658796906 + ... + 3658796963.

It is an arithmetic number, because the mean of its divisors is an integer number (54881954025).

Almost surely, 2^212210222201 is an apocalyptic number.

It is an amenable number.

212210222201 is a deficient number, since it is larger than the sum of its proper divisors (7317593899).

212210222201 is an equidigital number, since it uses as much as digits as its factorization.

212210222201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7317593898.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 212210222201 its reverse (102222012212), we get a palindrome (314432234413).

The spelling of 212210222201 in words is "two hundred twelve billion, two hundred ten million, two hundred twenty-two thousand, two hundred one".