122022121 has 8 divisors (see below), whose sum is σ = 132615560. Its totient is φ = 111601152.

The previous prime is 122022119. The next prime is 122022137. The reversal of 122022121 is 121220221.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1022121 + 121000000 = 1011^2 + 11000^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 122022121 - 2¹ = 122022119 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (122022181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41640 + ... + 44473.

It is an arithmetic number, because the mean of its divisors is an integer number (16576945).

Almost surely, 2^122022121 is an apocalyptic number.

It is an amenable number.

122022121 is a deficient number, since it is larger than the sum of its proper divisors (10593439).

122022121 is a wasteful number, since it uses less digits than its factorization.

122022121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86235.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 122022121 is about 11046.3623424184. The cubic root of 122022121 is about 495.9975407982.

Adding to 122022121 its reverse (121220221), we get a palindrome (243242342).

The spelling of 122022121 in words is "one hundred twenty-two million, twenty-two thousand, one hundred twenty-one".