122021122122 has 48 divisors (see below), whose sum is σ = 282702473352. Its totient is φ = 37902105600.

The previous prime is 122021122121. The next prime is 122021122151. The reversal of 122021122122 is 221221120221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 104737024161 + 17284097961 = 323631^2 + 131469^2 .

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 = 122021122095 and 122021122104.

It is not an unprimeable number, because it can be changed into a prime (122021122121) 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, 1943163 + ... + 2004974.

Almost surely, 2^122021122122 is an apocalyptic number.

122021122122 is an abundant number, since it is smaller than the sum of its proper divisors (160681351230).

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

122021122122 is a wasteful number, since it uses less digits than its factorization.

122021122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3948263 (or 3948260 counting only the distinct ones).

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

Adding to 122021122122 its reverse (221221120221), we get a palindrome (343242242343).

The spelling of 122021122122 in words is "one hundred twenty-two billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-two".