1111212222110 has 48 divisors (see below), whose sum is σ = 2126682868320. Its totient is φ = 417960291840.

The previous prime is 1111212222097. The next prime is 1111212222137. The reversal of 1111212222110 is 112222121111.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3031655 + ... + 3378365.

It is an arithmetic number, because the mean of its divisors is an integer number (44305893090).

Almost surely, 2^{1111212222110} is an apocalyptic number.

1111212222110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1111212222110 is a deficient number, since it is larger than the sum of its proper divisors (1015470646210).

1111212222110 is a wasteful number, since it uses less digits than its factorization.

1111212222110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347861 (or 347844 counting only the distinct ones).

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

Adding to 1111212222110 its reverse (112222121111), we get a palindrome (1223434343221).

The spelling of 1111212222110 in words is "one trillion, one hundred eleven billion, two hundred twelve million, two hundred twenty-two thousand, one hundred ten".