222212100021211 has 4 divisors (see below), whose sum is σ = 223908375594024. Its totient is φ = 220515824448400.

The previous prime is 222212100021173. The next prime is 222212100021227. The reversal of 222212100021211 is 112120001212222.

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 222212100021211 - 2¹¹ = 222212100019163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (222212100021011) 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, 848137786210 + ... + 848137786471.

It is an arithmetic number, because the mean of its divisors is an integer number (55977093898506).

Almost surely, 2^{222212100021211} is an apocalyptic number.

222212100021211 is a deficient number, since it is larger than the sum of its proper divisors (1696275572813).

222212100021211 is a wasteful number, since it uses less digits than its factorization.

222212100021211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696275572812.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 222212100021211 its reverse (112120001212222), we get a palindrome (334332101233433).

The spelling of 222212100021211 in words is "two hundred twenty-two trillion, two hundred twelve billion, one hundred million, twenty-one thousand, two hundred eleven".