42111021222 has 48 divisors (see below), whose sum is σ = 96940359360. Its totient is φ = 13173923376.

The previous prime is 42111021221. The next prime is 42111021259. The reversal of 42111021222 is 22212011124.

42111021222 is a `hidden beast` number, since 421 + 1 + 1 + 0 + 21 + 222 = 666.

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 = 42111021195 and 42111021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42111021221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 538788 + ... + 611975.

It is an arithmetic number, because the mean of its divisors is an integer number (2019590820).

Almost surely, 2^42111021222 is an apocalyptic number.

42111021222 is an abundant number, since it is smaller than the sum of its proper divisors (54829338138).

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

42111021222 is a wasteful number, since it uses less digits than its factorization.

42111021222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1150897 (or 1150894 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 42111021222 its reverse (22212011124), we get a palindrome (64323032346).

The spelling of 42111021222 in words is "forty-two billion, one hundred eleven million, twenty-one thousand, two hundred twenty-two".