2212121022012 has 72 divisors (see below), whose sum is σ = 6103117845552. Its totient is φ = 670007116800.

The previous prime is 2212121021993. The next prime is 2212121022049. The reversal of 2212121022012 is 2102201212122.

It is a happy number.

2212121022012 is a `hidden beast` number, since 221 + 2 + 1 + 210 + 220 + 12 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 586039 + ... + 2183502.

Almost surely, 2^{2212121022012} is an apocalyptic number.

2212121022012 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2212121022012 is an abundant number, since it is smaller than the sum of its proper divisors (3890996823540).

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

2212121022012 is a wasteful number, since it uses less digits than its factorization.

2212121022012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771579 (or 2771574 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2212121022012 its reverse (2102201212122), we get a palindrome (4314322234134).

The spelling of 2212121022012 in words is "two trillion, two hundred twelve billion, one hundred twenty-one million, twenty-two thousand, twelve".