111212120111022 has 48 divisors (see below), whose sum is σ = 275652111282912. Its totient is φ = 31743770080320.

The previous prime is 111212120110999. The next prime is 111212120111047. The reversal of 111212120111022 is 220111021212111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 111212120110986 and 111212120111004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432112233 + ... + 432369524.

It is an arithmetic number, because the mean of its divisors is an integer number (5742752318394).

Almost surely, 2^{111212120111022} is an apocalyptic number.

111212120111022 is an abundant number, since it is smaller than the sum of its proper divisors (164439991171890).

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

111212120111022 is a wasteful number, since it uses less digits than its factorization.

111212120111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864482793 (or 864482790 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 111212120111022 its reverse (220111021212111), we get a palindrome (331323141323133).

The spelling of 111212120111022 in words is "one hundred eleven trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, twenty-two".