1011112221212 has 6 divisors (see below), whose sum is σ = 1769446387128. Its totient is φ = 505556110604.

The previous prime is 1011112221151. The next prime is 1011112221253. The reversal of 1011112221212 is 2121222111101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126389027648 + ... + 126389027655.

It is an arithmetic number, because the mean of its divisors is an integer number (294907731188).

Almost surely, 2^{1011112221212} is an apocalyptic number.

It is an amenable number.

1011112221212 is a deficient number, since it is larger than the sum of its proper divisors (758334165916).

1011112221212 is a wasteful number, since it uses less digits than its factorization.

1011112221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252778055307 (or 252778055305 counting only the distinct ones).

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

Adding to 1011112221212 its reverse (2121222111101), we get a palindrome (3132334332313).

The spelling of 1011112221212 in words is "one trillion, eleven billion, one hundred twelve million, two hundred twenty-one thousand, two hundred twelve".