11211112212222 has 128 divisors (see below), whose sum is σ = 24392938752000. Its totient is φ = 3414674543616.

The previous prime is 11211112212203. The next prime is 11211112212241. The reversal of 11211112212222 is 22221221111211.

It is an interprime number because it is at equal distance from previous prime (11211112212203) and next prime (11211112212241).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2411508154 + ... + 2411512802.

It is an arithmetic number, because the mean of its divisors is an integer number (190569834000).

Almost surely, 2^{11211112212222} is an apocalyptic number.

11211112212222 is an abundant number, since it is smaller than the sum of its proper divisors (13181826539778).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11211112212222 is a wasteful number, since it uses less digits than its factorization.

11211112212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650.

The product of its digits is 128, while the sum is 21.

Adding to 11211112212222 its reverse (22221221111211), we get a palindrome (33432333323433).

It can be divided in two parts, 1121111 and 2212222, that added together give a palindrome (3333333).

The spelling of 11211112212222 in words is "eleven trillion, two hundred eleven billion, one hundred twelve million, two hundred twelve thousand, two hundred twenty-two".