11212212212 has 12 divisors (see below), whose sum is σ = 19640748036. Its totient is φ = 5600569920.

The previous prime is 11212212133. The next prime is 11212212239. The reversal of 11212212212 is 21221221211.

It can be written as a sum of positive squares in 2 ways, for example, as 1491040996 + 9721171216 = 38614^2 + 98596^2 .

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

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, 1379489 + ... + 1387592.

It is an arithmetic number, because the mean of its divisors is an integer number (1636729003).

Almost surely, 2^11212212212 is an apocalyptic number.

It is an amenable number.

11212212212 is a deficient number, since it is larger than the sum of its proper divisors (8428535824).

11212212212 is a wasteful number, since it uses less digits than its factorization.

11212212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2768098 (or 2768096 counting only the distinct ones).

The product of its digits is 64, while the sum is 17.

Adding to 11212212212 its reverse (21221221211), we get a palindrome (32433433423).

It can be divided in two parts, 11 and 212212212, that multiplied together give a palindrome (2334334332).

The spelling of 11212212212 in words is "eleven billion, two hundred twelve million, two hundred twelve thousand, two hundred twelve".