122012212122 has 12 divisors (see below), whose sum is σ = 264359792970. Its totient is φ = 40670737368.

The previous prime is 122012212013. The next prime is 122012212123. The reversal of 122012212122 is 221212210221.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 117195990921 + 4816221201 = 342339^2 + 69399^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 6778456229 = 122012212122 / (1 + 2 + 2 + 0 + 1 + 2 + 2 + 1 + 2 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 122012212095 and 122012212104.

It is not an unprimeable number, because it can be changed into a prime (122012212123) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3389228097 + ... + 3389228132.

Almost surely, 2^122012212122 is an apocalyptic number.

122012212122 is an abundant number, since it is smaller than the sum of its proper divisors (142347580848).

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

122012212122 is a wasteful number, since it uses less digits than its factorization.

122012212122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6778456237 (or 6778456234 counting only the distinct ones).

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

Adding to 122012212122 its reverse (221212210221), we get a palindrome (343224422343).

The spelling of 122012212122 in words is "one hundred twenty-two billion, twelve million, two hundred twelve thousand, one hundred twenty-two".