221210010112211 has 4 divisors (see below), whose sum is σ = 232852642223400. Its totient is φ = 209567378001024.

The previous prime is 221210010112207. The next prime is 221210010112229. The reversal of 221210010112211 is 112211010012122.

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

It is a cyclic number.

It is not a de Polignac number, because 221210010112211 - 2² = 221210010112207 is a prime.

It is a super-2 number, since 2×221210010112211² (a number of 29 digits) contains 22 as substring.

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 221210010112211.

It is not an unprimeable number, because it can be changed into a prime (221210010112711) 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, 5821316055566 + ... + 5821316055603.

It is an arithmetic number, because the mean of its divisors is an integer number (58213160555850).

Almost surely, 2^{221210010112211} is an apocalyptic number.

221210010112211 is a deficient number, since it is larger than the sum of its proper divisors (11642632111189).

221210010112211 is a wasteful number, since it uses less digits than its factorization.

221210010112211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11642632111188.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 221210010112211 its reverse (112211010012122), we get a palindrome (333421020124333).

The spelling of 221210010112211 in words is "two hundred twenty-one trillion, two hundred ten billion, ten million, one hundred twelve thousand, two hundred eleven".