1222011212 has 24 divisors (see below), whose sum is σ = 2148206256. Its totient is φ = 608246208.

The previous prime is 1222011199. The next prime is 1222011223. The reversal of 1222011212 is 2121102221.

It is a super-2 number, since 2×1222011212² = 2986622804507417888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1432178 + ... + 1433030.

It is an arithmetic number, because the mean of its divisors is an integer number (89508594).

Almost surely, 2^1222011212 is an apocalyptic number.

It is an amenable number.

1222011212 is a deficient number, since it is larger than the sum of its proper divisors (926195044).

1222011212 is a wasteful number, since it uses less digits than its factorization.

1222011212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2057 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1222011212 is about 34957.2769534470. The cubic root of 1222011212 is about 1069.1165771363.

Adding to 1222011212 its reverse (2121102221), we get a palindrome (3343113433).

It can be divided in two parts, 12220 and 11212, that added together give a palindrome (23432).

The spelling of 1222011212 in words is "one billion, two hundred twenty-two million, eleven thousand, two hundred twelve".