20122212110212 has 24 divisors (see below), whose sum is σ = 35937292507200. Its totient is φ = 9856219420320.

The previous prime is 20122212110197. The next prime is 20122212110213. The reversal of 20122212110212 is 21201121222102.

It is a self number, because there is not a number n which added to its sum of digits gives 20122212110212.

It is not an unprimeable number, because it can be changed into a prime (20122212110213) 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, 225601462 + ... + 225690637.

It is an arithmetic number, because the mean of its divisors is an integer number (1497387187800).

Almost surely, 2^{20122212110212} is an apocalyptic number.

It is an amenable number.

20122212110212 is a deficient number, since it is larger than the sum of its proper divisors (15815080396988).

20122212110212 is a wasteful number, since it uses less digits than its factorization.

20122212110212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451292331 (or 451292329 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20122212110212 its reverse (21201121222102), we get a palindrome (41323333332314).

The spelling of 20122212110212 in words is "twenty trillion, one hundred twenty-two billion, two hundred twelve million, one hundred ten thousand, two hundred twelve".