212221222122212 has 24 divisors (see below), whose sum is σ = 384234478453560. Its totient is φ = 102440721358080.

The previous prime is 212221222122211. The next prime is 212221222122229.

212221222122212 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 11108662357156 + 201112559765056 = 3332966^2 + 14181416^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212221222122211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96254489 + ... + 98434592.

It is an arithmetic number, because the mean of its divisors is an integer number (16009769935565).

Almost surely, 2^{212221222122212} is an apocalyptic number.

It is an amenable number.

212221222122212 is a deficient number, since it is larger than the sum of its proper divisors (172013256331348).

212221222122212 is a wasteful number, since it uses less digits than its factorization.

212221222122212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194698511 (or 194698509 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

The spelling of 212221222122212 in words is "two hundred twelve trillion, two hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, two hundred twelve".