1222111212 has 48 divisors (see below), whose sum is σ = 3261780480. Its totient is φ = 348872832.

The previous prime is 1222111207. The next prime is 1222111273. The reversal of 1222111212 is 2121112221.

It is a super-2 number, since 2×1222111212² = 2987111628992217888, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1222111191 and 1222111200.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102633 + ... + 113919.

It is an arithmetic number, because the mean of its divisors is an integer number (67953760).

Almost surely, 2^1222111212 is an apocalyptic number.

1222111212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1222111212 is an abundant number, since it is smaller than the sum of its proper divisors (2039669268).

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

1222111212 is a wasteful number, since it uses less digits than its factorization.

1222111212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12590 (or 12588 counting only the distinct ones).

The product of its digits is 32, while the sum is 15.

The square root of 1222111212 is about 34958.7072415443. The cubic root of 1222111212 is about 1069.1457391005.

Adding to 1222111212 its reverse (2121112221), we get a palindrome (3343223433).

The spelling of 1222111212 in words is "one billion, two hundred twenty-two million, one hundred eleven thousand, two hundred twelve".