211111002222222 has 32 divisors (see below), whose sum is σ = 447499914574752. Its totient is φ = 66165521675264.

The previous prime is 211111002222217. The next prime is 211111002222227. The reversal of 211111002222222 is 222222200111112.

It is an interprime number because it is at equal distance from previous prime (211111002222217) and next prime (211111002222227).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211111002222227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021474023 + ... + 1021680674.

It is an arithmetic number, because the mean of its divisors is an integer number (13984372330461).

Almost surely, 2^{211111002222222} is an apocalyptic number.

211111002222222 is an abundant number, since it is smaller than the sum of its proper divisors (236388912352530).

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

211111002222222 is a wasteful number, since it uses less digits than its factorization.

211111002222222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2043155732.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 211111002222222 its reverse (222222200111112), we get a palindrome (433333202333334).

The spelling of 211111002222222 in words is "two hundred eleven trillion, one hundred eleven billion, two million, two hundred twenty-two thousand, two hundred twenty-two".