122112021222 has 48 divisors (see below), whose sum is σ = 279861330528. Its totient is φ = 38400912000.

The previous prime is 122112021209. The next prime is 122112021223. The reversal of 122112021222 is 222120211221.

It is a happy number.

It is a super-2 number, since 2×122112021222² (a number of 23 digits) contains 22 as substring.

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 = 122112021195 and 122112021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122112021223) 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, 1990029 + ... + 2050472.

It is an arithmetic number, because the mean of its divisors is an integer number (5830444386).

Almost surely, 2^122112021222 is an apocalyptic number.

122112021222 is an abundant number, since it is smaller than the sum of its proper divisors (157749309306).

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

122112021222 is a wasteful number, since it uses less digits than its factorization.

122112021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4040605 (or 4040602 counting only the distinct ones).

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

Adding to 122112021222 its reverse (222120211221), we get a palindrome (344232232443).

The spelling of 122112021222 in words is "one hundred twenty-two billion, one hundred twelve million, twenty-one thousand, two hundred twenty-two".