20122111221112 has 32 divisors (see below), whose sum is σ = 38239580815920. Its totient is φ = 9925669992960.

The previous prime is 20122111221103. The next prime is 20122111221119. The reversal of 20122111221112 is 21112211122102.

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 20122111221112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122111221119) 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, 48563703 + ... + 48976294.

Almost surely, 2^{20122111221112} is an apocalyptic number.

It is an amenable number.

20122111221112 is a deficient number, since it is larger than the sum of its proper divisors (18117469594808).

20122111221112 is a wasteful number, since it uses less digits than its factorization.

20122111221112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97540351 (or 97540347 counting only the distinct ones).

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

Adding to 20122111221112 its reverse (21112211122102), we get a palindrome (41234322343214).

It can be divided in two parts, 2012211 and 1221112, that added together give a palindrome (3233323).

The spelling of 20122111221112 in words is "twenty trillion, one hundred twenty-two billion, one hundred eleven million, two hundred twenty-one thousand, one hundred twelve".