1011111212222 has 8 divisors (see below), whose sum is σ = 1516671434376. Its totient is φ = 505554067432.

The previous prime is 1011111212141. The next prime is 1011111212231. The reversal of 1011111212222 is 2222121111101.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1011111212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419468 + ... + 1482624.

It is an arithmetic number, because the mean of its divisors is an integer number (189583929297).

Almost surely, 2^{1011111212222} is an apocalyptic number.

1011111212222 is a deficient number, since it is larger than the sum of its proper divisors (505560222154).

1011111212222 is a wasteful number, since it uses less digits than its factorization.

1011111212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538682.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1011111212222 its reverse (2222121111101), we get a palindrome (3233232323323).

The spelling of 1011111212222 in words is "one trillion, eleven billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-two".