20122211121112 has 32 divisors (see below), whose sum is σ = 39194280213120. Its totient is φ = 9674537483520.

The previous prime is 20122211121107. The next prime is 20122211121119. The reversal of 20122211121112 is 21112111222102.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20122211121112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122211121119) 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, 258362173 + ... + 258440044.

It is an arithmetic number, because the mean of its divisors is an integer number (1224821256660).

Almost surely, 2^{20122211121112} is an apocalyptic number.

It is an amenable number.

20122211121112 is a deficient number, since it is larger than the sum of its proper divisors (19072069092008).

20122211121112 is a wasteful number, since it uses less digits than its factorization.

20122211121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516802411 (or 516802407 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 20122211121112 its reverse (21112111222102), we get a palindrome (41234322343214).

The spelling of 20122211121112 in words is "twenty trillion, one hundred twenty-two billion, two hundred eleven million, one hundred twenty-one thousand, one hundred twelve".