122011222121 has 8 divisors (see below), whose sum is σ = 129208757760. Its totient is φ = 114815953728.

The previous prime is 122011222117. The next prime is 122011222127. The reversal of 122011222121 is 121222110221.

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

It is a cyclic number.

It is not a de Polignac number, because 122011222121 - 2² = 122011222117 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 122011222121.

It is not an unprimeable number, because it can be changed into a prime (122011222127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 455381 + ... + 671858.

It is an arithmetic number, because the mean of its divisors is an integer number (16151094720).

Almost surely, 2^122011222121 is an apocalyptic number.

It is an amenable number.

122011222121 is a deficient number, since it is larger than the sum of its proper divisors (7197535639).

122011222121 is a wasteful number, since it uses less digits than its factorization.

122011222121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133623.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 122011222121 its reverse (121222110221), we get a palindrome (243233332342).

The spelling of 122011222121 in words is "one hundred twenty-two billion, eleven million, two hundred twenty-two thousand, one hundred twenty-one".