12212021121112 has 16 divisors (see below), whose sum is σ = 22906687677840. Its totient is φ = 6103571073696.

The previous prime is 12212021121067. The next prime is 12212021121137. The reversal of 12212021121112 is 21112112021221.

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 12212021121112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 304914583 + ... + 304954630.

It is an arithmetic number, because the mean of its divisors is an integer number (1431667979865).

Almost surely, 2^{12212021121112} is an apocalyptic number.

It is an amenable number.

12212021121112 is a deficient number, since it is larger than the sum of its proper divisors (10694666556728).

12212021121112 is a wasteful number, since it uses less digits than its factorization.

12212021121112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609871722 (or 609871718 counting only the distinct ones).

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

Adding to 12212021121112 its reverse (21112112021221), we get a palindrome (33324133142333).

The spelling of 12212021121112 in words is "twelve trillion, two hundred twelve billion, twenty-one million, one hundred twenty-one thousand, one hundred twelve".