122201222121 has 48 divisors (see below), whose sum is σ = 197832867648. Its totient is φ = 72034531200.

The previous prime is 122201222119. The next prime is 122201222131. The reversal of 122201222121 is 121222102221.

It is a happy number.

122201222121 is a `hidden beast` number, since 122 + 201 + 222 + 121 = 666.

It is not a de Polignac number, because 122201222121 - 2¹ = 122201222119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122201222094 and 122201222103.

It is not an unprimeable number, because it can be changed into a prime (122201222131) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18593766 + ... + 18600336.

It is an arithmetic number, because the mean of its divisors is an integer number (4121518076).

Almost surely, 2^122201222121 is an apocalyptic number.

122201222121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122201222121 is a deficient number, since it is larger than the sum of its proper divisors (75631645527).

122201222121 is a wasteful number, since it uses less digits than its factorization.

122201222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11702 (or 11699 counting only the distinct ones).

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

Adding to 122201222121 its reverse (121222102221), we get a palindrome (243423324342).

The spelling of 122201222121 in words is "one hundred twenty-two billion, two hundred one million, two hundred twenty-two thousand, one hundred twenty-one".