20122220212212 has 24 divisors (see below), whose sum is σ = 47747641183200. Its totient is φ = 6593721877216.

The previous prime is 20122220212097. The next prime is 20122220212301. The reversal of 20122220212212 is 21221202222102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14210606787 + ... + 14210608202.

It is an arithmetic number, because the mean of its divisors is an integer number (1989485049300).

Almost surely, 2^{20122220212212} is an apocalyptic number.

It is an amenable number.

20122220212212 is an abundant number, since it is smaller than the sum of its proper divisors (27625420970988).

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

20122220212212 is a wasteful number, since it uses less digits than its factorization.

20122220212212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28421215055 (or 28421215053 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 20122220212212 its reverse (21221202222102), we get a palindrome (41343422434314).

The spelling of 20122220212212 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty million, two hundred twelve thousand, two hundred twelve".