222212111101 has 4 divisors (see below), whose sum is σ = 235283411772. Its totient is φ = 209140810432.

The previous prime is 222212111063. The next prime is 222212111123. The reversal of 222212111101 is 101111212222.

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 153486867076 + 68725244025 = 391774^2 + 262155^2 .

It is a cyclic number.

It is not a de Polignac number, because 222212111101 - 2¹³ = 222212102909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222212111131) 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, 6535650310 + ... + 6535650343.

It is an arithmetic number, because the mean of its divisors is an integer number (58820852943).

Almost surely, 2^222212111101 is an apocalyptic number.

It is an amenable number.

222212111101 is a deficient number, since it is larger than the sum of its proper divisors (13071300671).

222212111101 is a wasteful number, since it uses less digits than its factorization.

222212111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13071300670.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 222212111101 its reverse (101111212222), we get a palindrome (323323323323).

The spelling of 222212111101 in words is "two hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, one hundred one".