1111212202222 has 4 divisors (see below), whose sum is σ = 1666818303336. Its totient is φ = 555606101110.

The previous prime is 1111212202213. The next prime is 1111212202223. The reversal of 1111212202222 is 2222022121111.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1111212202222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111212202223) 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 as a sum of consecutive naturals, namely, 277803050554 + ... + 277803050557.

It is an arithmetic number, because the mean of its divisors is an integer number (416704575834).

Almost surely, 2^{1111212202222} is an apocalyptic number.

1111212202222 is a deficient number, since it is larger than the sum of its proper divisors (555606101114).

1111212202222 is an equidigital number, since it uses as much as digits as its factorization.

1111212202222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555606101113.

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

Adding to 1111212202222 its reverse (2222022121111), we get a palindrome (3333234323333).

The spelling of 1111212202222 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred two thousand, two hundred twenty-two".