122220100121 has 8 divisors (see below), whose sum is σ = 139688501760. Its totient is φ = 104753795328.

The previous prime is 122220100117. The next prime is 122220100127. The reversal of 122220100121 is 121001022221.

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

It is not a de Polignac number, because 122220100121 - 2² = 122220100117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122220100096 and 122220100105.

It is not an unprimeable number, because it can be changed into a prime (122220100127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 397256 + ... + 634233.

It is an arithmetic number, because the mean of its divisors is an integer number (17461062720).

Almost surely, 2^122220100121 is an apocalyptic number.

It is an amenable number.

122220100121 is a deficient number, since it is larger than the sum of its proper divisors (17468401639).

122220100121 is a wasteful number, since it uses less digits than its factorization.

122220100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1048423.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 122220100121 its reverse (121001022221), we get a palindrome (243221122342).

The spelling of 122220100121 in words is "one hundred twenty-two billion, two hundred twenty million, one hundred thousand, one hundred twenty-one".