122121210222 has 80 divisors (see below), whose sum is σ = 299185326000. Its totient is φ = 36923765760.

The previous prime is 122121210221. The next prime is 122121210227. The reversal of 122121210222 is 222012121221.

It is a happy number.

122121210222 is a `hidden beast` number, since 1 + 221 + 212 + 10 + 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 = 122121210195 and 122121210204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122121210221) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 723804 + ... + 876432.

It is an arithmetic number, because the mean of its divisors is an integer number (3739816575).

Almost surely, 2^122121210222 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 122121210222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149592663000).

122121210222 is an abundant number, since it is smaller than the sum of its proper divisors (177064115778).

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

122121210222 is a wasteful number, since it uses less digits than its factorization.

122121210222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153103 (or 153094 counting only the distinct ones).

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

Adding to 122121210222 its reverse (222012121221), we get a palindrome (344133331443).

The spelling of 122121210222 in words is "one hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand, two hundred twenty-two".