212212232221122 has 64 divisors (see below), whose sum is σ = 553517963101440. Its totient is φ = 58993361849088.

The previous prime is 212212232221097. The next prime is 212212232221139. The reversal of 212212232221122 is 221122232212212.

212212232221122 is a `hidden beast` number, since 2 + 1 + 2 + 2 + 122 + 322 + 211 + 2 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7586580903 + ... + 7586608874.

It is an arithmetic number, because the mean of its divisors is an integer number (8648718173460).

Almost surely, 2^{212212232221122} is an apocalyptic number.

212212232221122 is an abundant number, since it is smaller than the sum of its proper divisors (341305730880318).

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

212212232221122 is a wasteful number, since it uses less digits than its factorization.

212212232221122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15173189832 (or 15173189826 counting only the distinct ones).

The product of its digits is 3072, while the sum is 27.

Adding to 212212232221122 its reverse (221122232212212), we get a palindrome (433334464433334).

The spelling of 212212232221122 in words is "two hundred twelve trillion, two hundred twelve billion, two hundred thirty-two million, two hundred twenty-one thousand, one hundred twenty-two".