20211111222312 has 64 divisors (see below), whose sum is σ = 52163718912000. Its totient is φ = 6518961731520.

The previous prime is 20211111222283. The next prime is 20211111222317. The reversal of 20211111222312 is 21322211111202.

It is not an unprimeable number, because it can be changed into a prime (20211111222317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4910643 + ... + 8033469.

It is an arithmetic number, because the mean of its divisors is an integer number (815058108000).

Almost surely, 2^{20211111222312} is an apocalyptic number.

It is an amenable number.

20211111222312 is an abundant number, since it is smaller than the sum of its proper divisors (31952607689688).

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

20211111222312 is a wasteful number, since it uses less digits than its factorization.

20211111222312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131566 (or 3131562 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 21.

Adding to 20211111222312 its reverse (21322211111202), we get a palindrome (41533322333514).

It can be divided in two parts, 2021111 and 1222312, that added together give a palindrome (3243423).

The spelling of 20211111222312 in words is "twenty trillion, two hundred eleven billion, one hundred eleven million, two hundred twenty-two thousand, three hundred twelve".