212212121212212 has 72 divisors (see below), whose sum is σ = 549657351239136. Its totient is φ = 63670003320000.

The previous prime is 212212121212171. The next prime is 212212121212367.

212212121212212 is nontrivially palindromic in base 10.

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 23 ways as a sum of consecutive naturals, for example, 723376114 + ... + 723669417.

Almost surely, 2^{212212121212212} is an apocalyptic number.

212212121212212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212212121212212 is an abundant number, since it is smaller than the sum of its proper divisors (337445230026924).

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

212212121212212 is a wasteful number, since it uses less digits than its factorization.

212212121212212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1447045661 (or 1447045648 counting only the distinct ones).

The product of its digits is 512, while the sum is 24.

The spelling of 212212121212212 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred twenty-one million, two hundred twelve thousand, two hundred twelve".